I get it must be gutting for people to steal your identity like that and profit off of it, but it happens all the time to influencers unfortunately. It’s just one of those things, you can only do so much to stop it. Also, doesn’t posting stuff on an public Instagram page make the image public domain and therefore she doesn’t own it?
Honestly she really needs therapy because her reaction is way too over the top and especially given all that is happening in the world right now she really needs to get some perspective!