Wow, thank you so much for lining to this article. My teenage SD moved in with us a year ago, after having a very traumatic time with her mum, she didnt talk to her for a year.
We tried to get SD to go to mediation, or communicate in some way with her mum but she just wouldnt and if you mentioned it to her she was absolutely terrified we would force her, tears, shouts everything you can imagine, it has been horrible.
There is now a light at the end of the tunnel, she has met up with her mum twice, she still wont allow her mum to have her phone number and as long as she is in control she is ok.
Im not sure if she will ever have a normal relationship with her mum but at least we are over the worst.