information please

Hello! My name is Marie and I'm new to this community.

I just got a Boston Terrier puppy a couple weeks ago. It is six and a half months old. At what point do Bostons stop growing? I've tried to find this info everywhere but I've had no success. She's already about 10lbs. I'm hoping she won't get much bigger than 15. I have the names/akc numbers of her parents/grandparents- how can I find out how big they were?

Thanks in advance!!!