DSD is 23 and has been with me (only me) since she was 12. Her Mum has started coming back on the scene. DSD is conflicted, upset. My DS2 is DSD's half brother and DSD's mum tried to get him involved too, but I have said no.
DSD's mum hasn't been on the scene since she was 12 - I got her out of care and she has been alright with me since. Her Dad, DS2's Dad, left all of us when she was about 13 and he has only maintained a relationship with DS2 - not DSD. Basically I have been her only parent for 11 years.
She is her mum, I have never denied that, but I just think she is a bad influence and a bad person. Genuinely a nasty piece of work, she has walked out on 3 DDs.
I have more or less kept my mouth shut, just, keep away from my own 2 DSs and go steady with DSD.