Friend pretending to be in a Sorority

[cbatt]

My friend claims shes in a sorority, but it is very obvious she isn't. She doesn't have pictures and no one knows who she is. She makes up stories and says she has a big, but she doesn't. She doesn't go to meetings and doesn't pay a thing. How do I go about this situation? She needs someone to call her out and Id rather not be that person.