That's fairly impressive... though, does she have anything that covers Fighting well? I think that would be the biggest problem to deal with, even if she has Rock and Ghost covered. Those aren't actual weaknesses, while with Fighting... you'd want to make sure to get those out of the way as quickly as possible.

[...he really has no idea how to react to that]

...erm, yes. What does the rest of her look like, anyway? I'm having difficulty making... well, anything but that out.