A lot of it is about wifework. MiLs seeing it as the DiL's responsibility to organise stays, send cards, bring the grandkids round, keep the house tidy because she did it all. DiLs only speaking to the MiL on the phone because FiL hands it straight over and goes back to watching golf (my dad).
Gosh yes to this. I was thinking about it only the other day. My Grandmother and possibly her Mother were very domineering difficult women. Whenever we visited My brother and I would go downstairs to see our Great Grandmother. I thought she was ok but I was young then! My dad really did not like going to see her (or his mum for that matter). He later wrote about his family (A kind of history complete with family tree) and I found out some more about these two women. Although not as bad as son MILs you read about on here, it was noticeable that both my Dad and Uncle would rarely visit and Mum and my Aunt would have to nag them.
My Grandmother would complain to my mum that my Aunt would not let my Uncle visit and I know she said the same to my Aunt about Mum!
My Grandma used to come to us every Christmas and she used to feel slighted by nothing so in every photo she has her 'face' on.
I once stayed with my Grandparents while everyone else in my family was in a caravan. This was my Grandma's choice! She then had a face on everyday about us going off on trips (we were on holiday!!!). My dad had to make amends. Bloody hell it was awkward!
One thing though, she could not criticize mum and my Aunt for the way they parented. She worked all hours herself (sadly because of her situation, not because she was a high flying career woman).
I realise I have not mentioned my Grandad. Sadly he was very much in the background. She always answered for him so I never really got to know him, only through what my Dad told me.