[Author's note. This story is an immediate continuation of Part 1, which I urge you to read first if you expect any of this to make sense.]
*
A while later, the girls shared a shower. They washed themselves but, when it came to rinsing off, Elena took charge of the shower-head and played it over Patricia's body, washing the suds down until she reached her sister's crotch. Here, she inverted the nozzle so that it blasted tingling needles of hot water up against Patricia's vagina, prompting a shriek.
"Stand still." Elena chided, laughing at the squirming girl. "Haven't you ever masturbated with a shower before?"
"I-I" Patricia was having difficulty speaking with what the water was doing to her. She tried to stay still but it wasn't easy. "I've never... masturbated...at all."
"Never?" Shrieked Elena, disbelief all over her face.
"N-No. I touched... there, once or twice but I knew it was wrong. I had to do a lot of penance-"
"You confessed it?" Elena had had the same traditional catholic upbringing but had been rebellious even as a little girl. Patricia had always been 'the good one'.
"Yes...Oh...Oh!" Patricia's first shower assisted climax cut off any further responses.
Elena mercilessly kept the jet right on Patricia's clit, prolonging her orgasm as much as possible. She waited until her sister had stopped shaking and was merely trembling and breathing heavily. "Oh, my poor little sister." Elena pressed herself against Patricia, kissing her wetly. "See what you've been missing?"
Patricia nodded but looked less than happy. "But, the Bible says-"
"The Bible says men mustn't 'spill their seed wastefully'. It doesn't mention what women can get up to. Andrew told me that homosexuality was illegal here until a few years ago but that lesbianism never was because Queen Victoria didn't believe there was anything two women could do together that was immoral."
"But-"
"No buts. Sex isn't sin. It's fun, it's the best way in the world to share love and it's changed you in so many wonderful ways but it's not sinful." Elena kissed Patricia again, noting the improved response and the hard nipples pressing into her own tits.
Patricia looked mollified.
"Now let's go to bed. Andrew 'll wonder why we're taking so long."
They got out, dried off and returned to the bedroom, both wrapped in bath towels. Andrew was fast asleep. Quietly, they slipped under the duvet to join him, Patricia getting to be in the middle. She eased herself as close as possible to him, feeling his now limp penis come to rest against her bottom. Carefully, she snuggled under his arm and held her own out beckoning Elena to do likewise.
* * * * *
Patricia awoke slowly. There was a warm, tingly feeling between her legs. She sighed with pleasure. As she became more aware, it dawned on her that there were fingers down there, responsible for the feeling. They weren't hers so it must be Andrew. She hummed and eased her legs a fraction apart.
"Shh. You'll wake the baby." Elena's voice.
Patricia's eyes sprang open, shocked. If Andrew was still asleep...
Elena was grinning at her with affection. It was Elena's hand between Patricia's legs: Elena's finger dipping into her slippery vagina. Patricia reacted by clamping her thighs tight, inadvertently trapping Elena's hand exactly where it was.
"Silly sister." Elena whispered. "Relax. You'll enjoy it more." Her free hand reached for Patricia's breast, tweaking first one nipple, then the other, into life. Slowly, Patricia relaxed, letting Elena move her fingers once more.
"Good girl." Elena leant close to whisper, nipping Patricia's earlobe gently while she was about it. "Touch me too."
Patricia made no response.
"Touch me Patricia. Touch me just like I'm touching you." Elena held her sister's gaze, willing her to obedience. Momentarily she felt tentative fingertips on her silken pubic mound. Feather light they traced down between her parted thighs, finding Elena's labia.
Silently, the girls caressed each other, one leading and one responding in kind. The heat of passion flared in two abdomens as slick fingers danced around the tiny clitoral buds, kindling fire. Faint sighs and whispered moans suffused the shrinking space between them until their lips met and their tongues entwined. Nipples grazed against nipples as the girls writhed in ever increasing urgency. Their joined mouths muffled and swallowed the noise of their shared climax.
"Wow. That was sexy." Andrew was awake. He grinned lecherously past Patricia's curls at Elena. "Sisters are doing for themselves, huh?"
"How long have you been awake?" Elena asked as he propped himself up on an elbow for a better vantage.
"About 5 minutes. It's hard to sleep with two wriggling girls sharing the bed."
"Oh, did we wake you? We did try to be quiet."
"S'ok. I wouldn't have missed that for a gold clock. Next time, wake me first so I can watch it all."
"Pervy!" Elena stuck out her tongue.
"That, from a girl who pimped her boyfriend to her sister then used it as an excuse to indulge in lesbian incest!" He fell back onto the pillow, laughing.
"Elena." Patricia's voice was small and calm. She waited until she had Elena's full attention. "I don't mind if he watches us." She blushed at her own admission. "Last night... in the shower... I pretended Andrew was there too... and..."
"What's this?" Andrew's curiosity was suddenly piqued.
"Elena showed me how to use the shower to... you know... it tingles." Even after all she'd done with him, she had difficulty saying some things.
"I taught her shower head masturbation." Elena clarified, as if he hadn't understood. It was probably a good thing to keep using the words to desensitise her coy sister. "Andrew Darling, did you know that..." She thought better of being indiscrete. "Never mind."
"You can tell him." Mumbled Patricia, her pink face buried in her sister's sparse bosom.
"Before you seduced my little sister, she'd never had an orgasm. No wonder she was so... uptight." Elena stroked Patricia's hair parentally and looked meaningfully at Andrew.
Patricia struggled free and turned over to face him. "And you rescued me from my ivory tower." She kissed him, taking the lead for the first time. "Thank you." Another deep kiss. "Thank you, my knight in shining armour."
"And fairy godmother." Observed Elena, throwing off the duvet to uncover them all. Andrew's cock sprang up, erect and proud and eager to join the party. "Is that the fairy godmother's magic wand or the knight errant's lance?"
"If there's any justice in the world, it's the subject of your fellatio 101 tutorial." Andrew wanted a blow job. More than that, he wanted a double header. He'd worked hard the last two days and he reckoned he was due some serious head.
Patricia's hand had somehow found its way to the base of his cock and she was looking at it thoughtfully as he negotiated with Elena. She understood what he wanted and... well... he had done it to her... and she'd loved it. Her anxiety, such as it was, centred on not knowing how and not wanting to disappoint him. She need not have worried. Elena proved to be an excellent instructor.