She looks really nice :)
Dang though... that girl has legs to the sky! Everything I was going to say has pretty much already been said. But I would be careful about her long canons and tendons. Her legs are clean and sound... but they tell you in pony club that you ideally want your tendons and canon bones in the front to be short-ish. I don't think it should be a problem though depending on how high you go with her..
Also her stomach/barrel/flank area.. it dips up (forgot what that's called confo wise) but you should be able to fix that with some muscle and a few more pounds :)
Congrats on your cute little OTTB.
I think she'll make a nice Eventer.!