I have 2 daughters from my first marriage. They're 17 and 14. I've been divorced from their mum for nearly ten years now and now live with my wife and 2 yo adopted little boy. I see the girls on a very regular basis and they stay once in the week and every other w/e. My eldest scraped through her GCSEs with last minute efforts and said he would learn lessons for AS levels. She recently got 4 U grades in mocks.
She has a very shouty relationship with her mum and does no work there. I've talked with her college and we all agree that things need to change. I think she should come and live with us during her studies. I have a calmer relationship with her and can supervise her working. Im also a teacher. Her mum is taking this all personally though and refuses to let his happen just saying that it would be disruptive. She wants her to stay there and get into better study habits - something she has failed to do despite our efforts so far for years - and me to supervise. Clearly, I feel I can't do this properly as I don't live there! She'd be much better off at ours. Help! Advice? Her mother is VERY tricky to talk to and doesn't listen.