Friend advice

I imagine she'll find out soon enough, regardless of what you say. Unless she sees something in the guy that is totally awesome and she's willing to overlook the mong bit for that awesome part.

In any case, I think she'll figure it out. And then you can waggle your finger in her face and say "nyah nyah told you so" <3

If she doesn't, suck it up and accept her as your friends anyways. Sometimes, people don't make the best decisions. Or sometimes, people just don't have the same desires and standards that you may hold for yourself.

Jam it back in, in the dark.