I certainly wasn't questioning any part of your comment on growth plates Terri, and thank you for pointing that out, I wasn't sure of the age! She's so big I sometimes forget how young she is still...
And I have intentionally kept Nyx on the lean side just for that reason. She is so athletic, I have been worried she'd hurt herself!
But she runs miles daily, and is in really good physical shape. Hence the question about jumping.
My comment regarding people's opinion was more directed at what seemed like an abrupt change in perspective when I mentioned how big she's getting. She is definitely over standard. But she, at least in MHO, is more lean and muscular than many other dogs out there.
Still, I was definitely asking for advice, and I appreciate everyone who took time to share their thoughts with me. For the next several months we'll just keep up the strengthening, balance, and spatial awareness stuff.
It's not the size of the dog in the fight, it's the size of the fight in the dog. Mark Twain