Well, she'd be getting Glamours as a straight up power, but it's being granted by the court and not coming from herself. If it makes you feel more comfortable, we can toss it into an amulet or the like. But at the same point, if you do want to make an enchanted gun she's going to have to learn actual magic eventually.
And yeah, a stunt for that is fine. So it'd be Glamours + a stunt.