I would very much like to play a Favoured Soul. It's a class in Complete Divine and it's basically the Sorcerer equivalent of a Cleric. There's a rather nice alternative class feature in PHB2 that swaps out the weapon stuff for a temporary hit point buff attached to your support spells, so I'll probably go with that.

I'm thinking something a little different in terms of character portrayal, though. She has divine power but it is believed she somehow stole it. Certain groups or even cultures may consider her a heretic for this, even though the rumours are unfounded, but it doesn't really bother her. She doesn't know who gave her this power or why but you can be sure she's going to use it. She never was the shy sort, nor did she ever really learn how to back down.