Wears light armor and keeps up fairly well, uses 1 handed, conjuration, and destruction to great effect.
As soon as the fight starts you can bet she is summoning an atronach, raising a dead body, shooting fireballs, or smacking the hell out of some enemies with the mace I gave her.
AND
Her dialogue is not the least bit condescending or whiny.
She isn't all magey and fragile, but isn't a grunt that gets in the way all the time. A good mix, IMHO.