My Mason will growl at his food when we are about to give it to him, but once it's down he just dives in! He is 10 weeks old, though I am sure he has the appetite of an adult...

You didn't mention whether she is actually eating the food or not? Have you tried getting your puppy to sit before you give her dinner? Mason has to sit and wait before he can eat. This might help calm her down a bit?
It is probably just a puppy thing. Mason gets easily distracted (there are 3 other dogs in the house) and so sometimes we have to feed him by hand a little or put something extra yummy in his dinner to keep his mind on the job in hand.
I'm a new owner too so I'm not sure how much help this is, but these are a few things we try to keep meal times relatively sane
Hope it works out!