I agree with the above as far as the school. Does she have an IEP? Are they violating something in the IEP? That can be a way to get the school's attention also. When my sister went through bullying, it took a few months of documenting everything before anything changed. My mom even started out by telling the school every time that she called that she was recording the conversation, and got their permission. (It wasn't required in her state, but she wanted it on record.) Then she followed up with paper trails - emails, and a few certified letters. The certified letters really got the school's attention since the legal world sees that as proof that the school is aware, someone saw it, and there was no denying they received the information. Also, something to consider: will she stay with these girls in high school (middle if she's not there yet, IDK what grades are in your elementary schools)? It might be worth the hassle of switching schools in hopes of her making friends before she has to deal with them for years longer.
Have you printed those photos of Asia and hung them up? There are a lot of studies that show kids gain confidence and a sense of belonging from having printed photos up of them and family members. It might help her to see herself, especially if it's a photo she loves, where she feels she looks great.
Hugs and prayers to you both!