Best friend for >10years, we are close.
Her DD1 is 18, regularly babysits for me, and we get on very well, I have supported/helped her in the past.
She has had a big blow up with her mum (my best friend), and moved out to stay with her boyfriend.
Thing is, I can see both sides, I know why her mum was upset and angry, but I do also thing that her mum did over react a bit and go a bit OTT.
Daughter is upset, I have been supportive without slagging off her or undemining her mum (I hope), and offered her a ear or a bed if she needs it (would rather she was here than god knows where).
Though I feel disloyal to best friend, feel her daughter needs at least one adult she can turn to. Am torn TBH :( AIBU
COI I dont have teens yet DD1 age 9, and DD2 nearly 3