I don't have a problem with her powerset, personally, save for one - the prehensile tail (which a lot of writers seem to forget about, or ignore, anyway).
She could be a little faster (well, she IS, now), but the strength...she's a Big Cat - cheetahs might be particularly known for their speed, but it's not unexpected that they're also pretty damn strong, too - maybe not on par with lions or tigers, but strong.
Claws - another pretty much necessary trait for someone with a Big Cat theme. Enhanced senses, ditto.
Enhanced healing...pretty much de rigeur among weres and other shapeshifters.
So, save for the tail, all of her powers extend directly from the theme - not always in the expected proportions, but she has all of the powers you'd expect from someone named Cheetah.