We'll have to see. I don't think any characters will appear. I would just make a new series of Chronicles for them so they can still be shown but be the stars of their own episodes and such. I gotta get to class. Chat with you some more when I get back.
I don't think she'll appear at all, at least not until a filler saga region. But don't be sad she got a special where Cyndaquil evolved and they would probably dumb her down in BW anyway so maybe it's for the best.