NTA, your daughter needs to learn to not bully others based on her own insecurities. Self esteem is a major issue and I’m sorry to hear she’s being teased, I myself am often very insecure but it’s not excuse to treat others badly and the sooner she learns this the better off she’ll be. Despite that, she’s also NTA. In fact, NSH.

I would advise not providing her with plastic surgery, at least not til she is older and even then it’s something I feel she should save up and pay for herself. You could instead pay for therapy/counselling. No amount of plastic surgery will fix the way she sees herself, fix her mind then ‘fix’ whatever else.