I have a SD8 and a new "ours" baby 5mo with my DH. SD has been a very good big sister in these first few months. We went to SD event where BM was there and SD came to sit with DH, me and new baby. I let her hold baby often, but since BM was at event I wouldn't let her hold baby in fear that she would take the baby over to BM! BM has been difficult and said horrible things about me and my family in the past so I do not want her anywhere near my baby.