See... now your just gonna drive me crazy. We've got Animal Growth (5th level spell, 9th level caster minimum) which she cast on her first day (Unless Charlie Counts as a person, in which case it could have been enlarge person, 1st level don't ask me why), then I suppose since Darla was able to cast Slay Living (5th level as well, and a cleric spell, even if Alex made her save, the lowest level instant death spell) she must have been level 9 as well unless AK is actually Finger of Death (level 7, lowest level single target instant death spell for wizards except for Phantasmal Killer which is a different thing entirely) for level 13 and then Arghhhh......
I'm running a campaign right now, with a party of munchkins. It does not take much to set me off on a string of optimization calculations, sort of a survival mechanism.
Oh, and unless Baldur's Gate lied to me, you could have specialist mages in 2nd edition. HAH!