Oh, Gracy, Gracy. You probably get absolutely nowhere, of course, but I think Nat's more amused by it than anything else unless Gracy gets aggressive at all.
The rich girl part probably hits Natalie straight on the chip on her shoulder. If she reads what's behind Natalie's tough girl attitude (and she can definitely be able to tell that there's something deeply traumatizing related to men behind the facade, because I think anyone who can read people and have knowledge of basic psych can figure that one out) then Natalie is, no, probably not going to be Emilie's biggest fan. At the same time, I think Natalie kind of wishes she could BE Emilie. Appearances are really of the absolute essence to Natalie, and I imagine she doesn't think there's anyone else in their year that does appearances quite as well as Emilie Devlin does. They're also in a couple of classes together, including the same section of Spell Theory, so there's that.