@OwlDoll
My exp too, both my mother and father are dead- so it makes the comments so much worse. Must be a MIL thing by all the comments on here. I don't know about it being an evolutionary thing or the fact that she dotes on her son etc.
To be honest, I feel it is a territorial thing and she hasn't let go of her baby.
My boyfriend has brown eyes, so does his mother. I have blue eyes like my Mum and inherited her blue eyes against my father's brown eyes. I think the blue eye gene must be pretty strong as brown is supposed to be dominant.
Anyone she came around and started saying everything was like his Dad's even his little 'skinny' legs. They were actually fat newborn legs!
She said he had blue eyes and that was the Irish in him (from their side), couldn't possibly be from my side of the family.
We called him a name, I chose it and boyfriend liked it- he wasn't named after anyone. She decided to trace family tree and said to my boyfriend- Oh he is named after some great great grandfather. My boyfriend did actually say I also had someone of that name in my family. Errrr no, he is not named after anyone in your family! That is just a coincidence!
Yes, really gets on your tits as well as all the other obsessive behaviour, constantly kissing baby when comes round, makes stupid bloody voices and weird noises saying same thing over and over, keeps coming round as misses him so much, buys everything for him to keep at her house and then makes comments like mine is bigger than yours! 
It was so nice when she went away for two weeks and I didn't have to see her- she has to come round at least twice a week apparently.