What levels can she spawn at when you pick her up at spellhold?

I always thought she was at the same level in spellhold as she was when she escaped chateau Irenicus.

Nope, she's just like all the other npc's whose chatacter level is based on the parties, i think like 1 below the average level not really sure though. Hope that helps Klorox Bleach, haha sorry just kiddin.

Do you have ToB installed? If so, all NPC's automatically level to the PC's level upon aquisition. At least, that's what they claim.

I know there's a few different spawns of her, but I also remember picking her up when everybody was at level 17+ and she only spawned at 12 or something significantly lower (this was a long time ago), IIRC.

There are only 2 (Mage) levels at which she can rejoin the party--I believe they are 11 and 13.