Kindly OP, god knows I don't want to be an advocate for men🙄but the FIL is suiting himself, and that is his choice.
When you see how they have treated you and your sacrifice, who could blame him?
Not me!
Your daughter and her husband sre users, but my real ire is for your daughter, whom should have loyalty to her mum.
I know that can be really painful to admit when it is family.
I agree with those that say, those that get lots of free childcare, especially for very young children, rarely appreciate it.
I admire those that say, not happening.
Young children are exhausting.
They were in my 30's and 40's.
Not a chance I would do it now.
No apologies, just not happening.
Some will tell you to get over the deceit, but no really loving appreciative daughter would behave like that.
Not for a minute.
You have done too much and deceit is your thanks.
I have read a lot of threads on here, but her deceit is a new low, and you would be very wise to wake up to it.
My relative is now sitting in a chair instead of gardening, which was her joy, or out meeting friends.
She can no longer drive, she lives a bit far out, and her children all are busy with their lives and work.
Her sister is kind when she is around, but only two years younger and retired, she is away holidaying so much.
She certainly is not providing free childcare for her children, she has more sense.
Apologies if that reads as harsh.
Eaten bread is very quickly forgotten.
Be very careful of sacrificing your good years and health for a daughter who would dress up for work, drop her kids off and head off for the day, on a mother who was already doing so much.
Utterly shameful duplicity that shows the character of someone who neither appreciates your sacrifice, nor the impact to your health such effort requires.
We teach people how to treat us, and it will be you who may bear the consequences of doing something that takes so much energy, and possibly deplete you of some fully active healthy years.