The weirdest thing occurred before my very eyes the other day. My daughter is 13 but she already is a full D cup. She was changing as I walked by her room. I kinda sneaked a peak when my mother walked into her room. My mother is 91. She started kissing her fingers then putting her fingers on my daughter’s pussy - only covered by cotton panties. My mom started rubbing her little crotch and making kissing noises at my daughter. My daughter was frozen in shock, as was I. I watched a bit longer. Mom took her other hand and started rubbing my daughter’s tits with one hand and her little pussy with the other. Mom started moaning and saying she liked how my daughter’s body felt. Then, she actually started sucking my daughter’s 13 year old nipples. She kept saying she was sorry but she couldn’t help it. She was furiously rubbing my daughter’s crotch. She leaned down and licked her crotch over the cotton panties. She started telling my daughter how good she smelled. Then she pulled the panties down and inserted a finger inside my daughter. My daughter winced and said ooow grandma you are hurting me. Mom just muttered an apology and kept finger fucking my child. She got between her little legs and started licking her clit. I was in shock. She licked her a few minutes and then she turned to walk out. I went to my room and masterbated - hard. I replayed all I had just seen over and over again till I came with such a force I almost blacked out. I want to see this again. Many, many, many times. I want to watch my mom molest my 13 year old daughter.