a painter works perfectly since that's finn's favorite medium as well (she owns an art gallery, but that's a relatively new development in the past few years, she bounces around between occupations that put her near artists and she's as flighty as you'd expect someone of the fairy folk to be) so she'd be extra salty. she loves art in all forms and likes to keep her finger on the pulse of what's happening so honestly i can see her traveling to find someone she's heard about. maybe she came a long way to find their artist and had been scoping them out, making her introduction and deciding whether or not she wanted to make them hers and found out mitzy had already gotten a hold of them once she'd made up her mind?