I don't think the trainers are from Celadon...most of them will be from Saffron. Either that or from around the world. The best psychics, all training there, I mean... ^^
You're right, CPF, nobody said that her mother was turned into a doll when Sabrouan found out about her powers, but her father said that Sabrina "drived away her parents" (or something like that XD). Her father ran (or jogged XD) away, that's one thing we know for sure. Her mother...? Well, we can suppose that if she wasn't with her husband at that time, she must already have been a doll. Maybe she was at first with her husband and later returned to try to get Sabrina back and was turned into a doll then, but you're right, we won't know for sure...
BTW, this is a bit weird to ask, but I wrote my first English Sabrina short story today. Anyone who wants to read it? ^^ Beware, the grammar is very bad and I fear that I have to rate it 13+ or even 15+, because of mentioned death and other...creepy things.