I guess it's true. Females really are emotional creatures.
Hey, watch it...
While it's true my older son only liked stuffed animals as targets for battle (I threw them, he slaughtered them with his Power Rangers sword), my younger one has always been very sentimental and attached to his dogs. And my sister never, ever cared about stuffed animals at all. But I still have my worn-out Pluto dog hiding in my closet...
And of course, once girls start dating, then they get the new collection of animals their boyfriends win for them at carnivals and give them as presents at Valentine's Day. So if your MC were a little older, she could be very happy to destroy a stuffed animal that came from an ex.
But she's too young for that, so maybe the stuffed animal is really, really ugly, or babyish, and was a present from one of those relatives who never notices that the kids are growing up?
(Did you notice how even a simple question can turn pretty darn complicated?)