DSD14 is not getting on with her mum, in a fairly spectacular way, at the moment. Most of it is usual teen stuff but there is a lot of things that she tells us (all taken with a generous pinch of salt) that, if genuinely true and even half as bad as she is telling us, are emotional abuse on her mothers part. I'm under no illusions that she will be embellishing her stories but there have been instances recently where she has been genuinely scared of her mother and she has recorded her screaming at her. These have included some truly unforgivable comments (think wish you'd never been born, you ruin my life type comments).
We live an hour and a half away, she comes EOW and most of all school holidays currently. Increasing her visits are a no go as her mother won't agree to every weekend as she wants her home to babysit her little sister. Weekdays would be impossible because of the travel time to school.
She has come to us this weekend in absolute bits. Her mum did text in the week saying she had taken her phone away due to excessive screen time, usually a text from mum about behaviour/arguments they've had/telling a off precede a very upset DSD telling us of another awful interaction. We always try to give the benefit of the doubt to her mum as we know what teen girls can be like, but some of the things DSD has told us she has said to her are just shocking. She was sobbing on my shoulder and asked if she can come and live here, previously she has said she would want to but doesn't want to leave her friends as we are so far away but the "only thing" keeping her at home is her friends/school. I said if you're serious we will look into how we can make it happen and she said yes please.
So my question is really, where do we start? I know her mum will 100% oppose it and will make life difficult, but do we need to consider anything legally? There is no official custody agreement, DH and DSD's mum were never married and they just agreed everything between them. Has anyone got any advice/experience in this kind of thing? Do we go straight to a solicitor now and figure out our options?