I didn't even know you could do that, how do you get her to progress, by talking to her when she's moved in or something else?
Yeah just talk to her and complete her quests. Afterwards she can join you in battle and deliver a single hit.
You'll want to use you own hits till you get low than hers.
Soo I completed her quests I think, but she doesn't join?
I'm using the google translator from English to Portuguese and this comment didn't make the slightest sense in the translation ๐ ๐ ๐ ๐ ๐