Well, you can't say that she won't come back, Elite Trainer Raven. It's the producer's choice to whether to bring back Misty/Kasumi or not. If that's the case, they'd better bring out more of her than before because quite frankly, I was getting angry at the producers. Although we do know a lot about Misty/Kasumi (just Misty for me), I'm sure there's more to know about her...
And lets hope if she comes back, she won't be like a Keckleon.
*imagining Misty with a red stripe on her belly* Now that's funny!
And the next region better not be Orre!