She looks good but I agree, I wouldn't be doing more then sitting on her at this age, so much growing with that young of a horse. You can still do tons of ground work and some lunge line work. I know it can be super hard to wait with a young horse, I got my last orse as a 2 1/2 year old and still waited a year till I really started riding her.
Good luck! She is very very pretty! Looks like my little boy!
Oh also with that young of a horse no matter how much you trust her, I would wear a helmet to be on the safe side.