Astea was not expecting that the inspection of magical artifacts would result in... becoming a fox. She didn't think that this was at all in the realm of possibility space. On one hand, it's academically fascinating, but on the other hand:
Being a fox kind of sucks. All of the social contracts that keep humans safe just do not at all apply anymore, and it's terrible. She can't just go to the weekly market to do her food shopping for the week, trade herbs and poultices and the occasional spot treatment for her meals. Foraging, especially this close to winter, is really not enough to sustain her. Not to mention that she is small and fragile, at least in comparison to her ordinary shape, and the world is filled with dangerous things like 'wild dogs' and 'humans that might think she's after their chickens.'
Fortunately for her, the fox she is seems to... have thumbs. She can also stand and walk on her hind legs, as easily as her four legs. For obvious reasons, she has been avoiding doing that in front of humans that might, perhaps, go 'what the fuck.' But these qualities mean she can mitigate the disaster, just a bit. She gets her silver amulet around her neck in case she needs to heal herself, she can access her pantry with a bit of maneuvering and balancing on a chair, she can reach the handle of her door and even lock and unlock it herself.
Still. She would really rather stop being a fox. So in a bid to maybe turn back human shaped before she loses all chances of stocking up for the winter, she uses her new vulpine sense of smell to track down a certain merchant. She could only afford one of the two artifacts in the set, and maybe the other could put her back. Fiddling with the music box itself didn't turn her back, but maybe attempting to fiddle with the clock will undo what its fellow accomplished. It's the best idea she has, anyway, short of trying to find a specialist, which sounds much more difficult.
After a series of careful misadventures tracking him followed by just a little bit of rummaging in the middle of the night, she snatches the clock and carries it off to see if poking it will fix her.
It does not.