Help! Catfish

Someone who I thought was my friend is trying to create drama between me and my boyfriend. I have tried to take the pictures from the Facebook she is using and reverse image searching and was wondering if anyone could help me. I’m highly upset because I thought this girl was my friend. She refuses to admit it’s her even tho I have a pretty heavy amount of info that it’s her. I now just want to make her have no choice but to admit it by find out of the picture is fake. If anyone can help I’ll upload the picture!