15 yo and BestFriend (bf) recently split up. DD went to camp for 3 weeks and her bf started talking to the boy she liked.They have a long history of the bf being the dominant person in the friendship. My DD made new friends and dropped the bf but she did try to explain why she was upset. The bf talked only about why she did it and how she was lonely and never apologized. DD invited her to lunch the next day and bf blew her off. Similar thing happened two more times- bf shared a secret from the past and when DD sent a text asking her to please stop, she got no response. Complication - her mom is/was a good friend. We have not reached out to each other in 2 months. I am assuming she thinks my DD dumped hers, whereas I think her DD made a few poor choices and if she had listened and apologized, they would have moved on. He DD chose to be right or stubborn and now she has no friends at school. Should I reach out to the other mom and what would I say that won't betray my DD? The other mom is self absorbed and a workaholic but I care about her family and we've been friends forever.