I have a defunct Princess Sparkle also; she is all rusted up and am guessing beyond repair unless anyone knows otherwise? :/
Maybe not! I mean, you might need to replace most (or all) of the parts, but with some ingenuity she could be fixable
![Smile :)](https://mlparena.com/Smileys/default/smile_001.gif)
From what I've seen of their mechanisms, they're quite simple to manipulate and anyone with a little small electronics knowledge can understand the components. So if there's a local shop that does repairs, or you know someone who's handy with this stuff, they might be able to suggest a solution for you, or fix the problem outright.