Well, I guess this is another "I can't figure out this NPC" thread. In my second playthrough I decided to make Maia a Ranger/Wizard, because my own Watcher is a single-class Ranger using crossbows and guns. So she's dual-wielding pistols and casting spells. But it doesn't feel too impressive. I guess it's a combination of MCing casters being a risky proposition and rangers being wobbly in general.
I've been trying to have her drop debuff spells and then fire away with her pistols, but I wonder if people have found any particularly effective combinations.