Join Date: Mar 2011
Location: In the rainy, wet north west.
Honestly, coming from experience, it comes from the horse. My horse is a QH and he is definitely downhill. He may not be conformationally correct for jumping but he is good at his job because he WANTS to. However I do not push him. I rarely ask him to jump over 2'9", though we do jump 3', but only because he LOVES his job.
I would certainly take into account her heart. But as long as her conformation is not something that will make it uncomfortable or hurtful to her, I say go for it. :)