/cgl/ - Cosplay & EGL

Can I ask a tangentially related question?
There's this girl in my cosplay friend group that is obscenely fat, yet she thinks she's a supermodel. This in itself isn't a problem, if she's happy with herself that doesn't effect me, but the problem is that she has this obsessive idea that guys are trying to "creep" on her or try to flirt with her or whatever when they are clearly not even close to interested in her. How do I break it to her that she's absolutely delusional and 99.9% of men are likely not attracted with her and likely would not "creep" on her like she thinks they do.
I don't think its healthy for her to continue on being this delusional but at the same time I think telling her the truth will do more harm then good.
What do?