Have you ever asked yourself why they prefer to spend time with your daughter-in-law's parents?
You sound like my mother. She is massively resentful that we spend more time with my husband's parents than her, but it's for a good reason.
Like your son and his family, we moved a long way from both our families for a better life. We still live in the UK, but about 300 miles from family. The reactions of our parents were very different.
My husband's parents were supportive of our decision and shared in our happiness, even though they would have preferred us to remain closer.
They visit us several times a year and we make the return journey several times a year. They are always pleased to see us, wanting to hear our news and what our daughter is doing. When we visit them, they bend over backwards to make our visit enjoyable.
My mother was determined to do everything she could to stop us moving. She used threats - "I'll never visit", warnings - "You'll regret moving away from family", "You won't be able to make friends" "You won't be able to afford to move back when you realise what a terrible mistake you have made".
When she realised we were going anyway, despite everything she said, she turned nasty. "You're a bad mother ruining your child's life by taking her away from her family and friends".
When we are staying with my in-laws we usually pay a duty visit to my mother (she lives 10 miles from my in-laws). She is never pleased to see us, but still berates us for preferring to spend time with my in-laws.
She makes unreasonable demands and calls me a bitch or an ungrateful cow when I don't concede to those demands.
She is always making little digs suggesting we are not really happy in our present home, which is ridiculous given that we are very happy and enjoy a high quality of life. Unfortunately, she makes no attempt to conceal her resentment of our happiness.
Who would you prefer to spend time with?