I am a foster parent and have three bio kids. I adopted two. Recently I'm fostering one girl, she is so good after what she has been through but, I met some disturbances. My eldest son who is 16 while she is 14 currently are close. I never noticed it much, mostly cause I work full-time but i after reading a journal entry of hers I realized how far it was. I encouraged her to write in a journal about things that were happening. I wouldn't of read it but, I saw my sons name in the journal. It was dated two months ago and it talked about how she was jealous. Jealous of my son being a little flirty with a neighbor of ours who's his age (which we encourage) I closed it not thinking of it much. I thought it was just a crush. Things got a bit weird when I came back from a party with my husband. My 16 year old was watching the younger kids. I went downstairs to all of them asleep including the neighbor friend who was on the couch. I walk into my sons room and my foster daughter is in his bed too. They were snuggling it was as innocent as that situation could be though. All clothes were on. It brought enough concern that I did take a look at her journal again. It was an invasion of her privacy but I was very concerned. Then I checked around five or so months ago in October was described sexual acts between her and my son. This did not disgust me as I thought it would, truly my first response to it was heartbreaking for her. The way she worded him put him on a pedestal in her mind. I'm not sure what to do. At this point I can't just send her away, and I wouldn't want to and it will be very hard to understand all that they are essentially. I talked a bit to my other kids and asked them discreetly about their encounters and they all have the same story. That she is with him. When my middle child told me that I felt like such a failure as a mother. Whenever I asked where my son or her were they all would repeat that line like it was normal. I never questioned it tell now and it makes me feel so guilty for not questioning it sooner. What do I do I'm at a total loss right now.