Ah. [Yep, that was one of his guesses.] Unless you're a smaller person, you might have to wait until she evolves to ride on her. Or if she's a bigger Ponyta.

[Not like Albert's, which was only a foot tall.]

But I'm sure you won't have too many problems. People learn how to ride giant birds and dragons all the time, here.

Letting it choose for itself might end up being for the best. One of my pokemon didn't like the name I picked out for her, so she named herself instead.