Maine coon female 9 months old

Hi this is Belle and she is 9 months and weighting 10 pounds, we never knew if she was really a maine coon cuz we got her from a Russian guy which was in a hurry selling 4 kittens. Well she was 5 weeks old by that time and is a big healthy girl now. She is busy, follows us everywhere likes talking and chirping, it's an Explorer too. That's her spring coat as you can see. So my question is, would she be a part Maine coon or she doesn't even look like one?

Any thoughts please?