I agree her ribs are very prominent and also her hip bones are sticking out on the top, so I think she is a little too thin. 1 3/4 to 2 cups doesn't sound like very much for a growing pup, especially a high energy breed. Our dog is 6 months now and he still eats about 3 1/2 cups a day and he's not too fat and not too thin. I would switch her food and then up the amount to try and get a bit more weight on her.

Thanks for all the biting tips folks, I have the same problem with my dog even though he's older he was not trained at all when I got him and he still has some lapses of judgement. Hoping he'll be easier to train once he gets the snip-snip here shortly.