I just fed my pet, which would allow me to battle with her, but it says that none of my pets can battle right now, even though both her hunger and happiness are maxed out.

Any ideas on what this is about?

Try this

pokes thread linked above

Oh. Sorry, then!

No, that's no problem. That's a very commonly asked question, and that thread I made is kinda getting pushed down again and is hard to find if you don't know where to look. I just linked it, because that's easier then typing everything here again. :P Hope you figure out what's up.