Hmmmm... I might make Corinne a straight mage, since if I was playing her in my game I'd cast magic more than anything. I did kind of wanted her to be a decent fighter, but with Noko and Seiko (my knight and monk) dishing out damage - I don't think I'll need to worry. Besides, she's supposed to have the best magic power and spell points.
So thus, I think I'll go with:
Corinne:
Sorceress (the "ress" is for feminism ^_^)
Noko:
Knight (even if they do sound dull XD)
Seiko:
Monk
Merri:
Cleric (always need one of those!)