I frankly, wouldn't jump her at all, you could really really f up her hips. And @cluckmecoop7 is right-
PLEASE do not breed your unproven, untitled, untested, dog. If you truly wanted to breed her you would have to look at her pedigree, get her OFA and PennHIP tested, title her in conformation...
I'm not sure if you understand what I mean? Jumping a dog before 2 on anything over 6 or 8 inches can harm their joints permanently. This is because puppy growth plates aren't closed until at least 12 months of age and jumping on open growth plates can cause long term damage. after 2 i feel you...
$900 is nothing unfortunately. I always say OFA doesn't lie.
I'm not talking about the height, I'm talking about her age and her joints. Just be very careful. Don't mess up your dog's joints like I did mine.