Before getting back in the pool I caressed her pussy to measure how juicy and wet she was. Of course caressing her with my tongue was the perfect measuring stick. When we entered the pool she sighed and I asked what caused that? She said the water touching her pussy gave it a tingle based on what she experienced 30 minutes ago. As we sat on the submerged stair I started caressing her and lightly rubbing her nipples, her breathing changed when I slipped my hand underwater and touched her labia being careful to not touch her vagina or clit. I took the blindfold out of her mask and put her weight belt back on. I told her we were going underwater for a new surprise and she was going to watch everything.
I reached in to the bag and pulled out a 8"long 4"wide, pulsating vibrator. She said that it would not fit in her and she had concerns about the length. Seeing that she had two children both by C-section, I assured her she could take it and I would go slow. I started slowly inserting the vibrator giving her time to relax and adjust. When I began to fuck her with it I stopped. I had her put her mask on and I put mine on, I said down and under we went. She would tap my head when she needed air because I was going to orally work her clit. With the vibrator being held in her pussy by my chin, I started to work her clit with my tongue, causing her to emit low groans and squirm underwater. During her first breath she asked if I could squeeze her nipples. I told her it was her job and she had this Oh My God look on her face. I assured her she would not be struck by lightning nor would she have her fingers cut off after confession. I told her she can figure out the tempo and pressure that would enhance her orgasm. I told her I had other things to do with my hands.
Back under I continued my oral dancing across her clit, and I reached down and turned the vibrator on low. She thrust her hips as the vibration started enjoying this added stimulation. I put her hands on her breast and she pulled them away. Bringing her to the surface I told her we could stop or she could participate and find out how much she could enjoy pleasing herself. She called me a bastard and I dunked her without warning, fingering her clit and moving the vibrator. This got her going again, but when I brought her to the surface, I pulled out the toy and started for the ladder. She asked me to stay, and that she would do what I asked and play with her breast. I decided she needed practice so I had her follow my instructions of lightly touching and flicking her breast and nipples, and then squeeze her nipples when I said so. Amazing, first squeeze of the nipples she groaned and admitted she was ready. I reinserted the toy, turned it on low and we submerged.