Yorkies are basically shadows, lol. They love attention and will follow you every where all the time.
There are a lot of talk about what is a good food for these little ones. If you find a good one, you should not need to supplement with vitamins. Maybe just some salmon oil or something like that.
I agree, if she is peeing, she is drinking.
As for a spay scar, I have looked, but Maggie's scar was pretty much gone when I last checked...if you didn't know what you were looking for, you didn't see it.
Molly sounds like she's got a good mommy! Welcome to YT!