Our little trysts with Master continued for quite awhile and we all grew quite comfortable with each other. Enough so that Master gave Carrie a new name, calling her simply girl. She has come a long way in the past few months, from a prudish housewife to a horny subservient slut ready to do almost anything to please her Master or fellow slaves. Unfortunately, life had conspired against us on several occasions preventing Master's wife pet from joining us. As much fun as the three of us had together I missed my sister slave and desperately wanted her to join us as well. I admit some of this was due to plain old lust, driven in part by the fact that she was very bisexual and I couldn't help but fantasize about the various things Master might have her and girl do to each other. There was, however a deep sense of loss at the fact that it had been so long since I had seen my beloved sister, never mind held her.
Anyways, it seemed like the fates had finally smiled upon us and girl and I were just pulling up in front of their house. Master and pet had the entire weekend off so we drove to their place planning on finally be able to spend some time together, all four of us. We walked in without knocking (as we had been instructed to) and I immediately removed my clothes. Girl, being as this was her first time at Master's house and with pet too, seemed nervous and just stood fidgeting so when I was done I helped her out of hers and led her upstairs. We could hear pet's moans as we walked down the hallway towards the bedroom.