My mother has always favored my nephew. He is my sister's only child.
My daughter was the first grandchild, my nephew was the second, my son was the third, My own children are 10 years apart.
My nephew was a handfull, he wasn't a good student in school, was often in trouble. As he got older, it got worse, but my mom thought (and still thinks) the sun rises and sets with him. He's been in trouble for drinking, smoking pot, he doesn't really have any long term life goals at 21 years old, but my mother dotes on him. My kids are polite, well behaved, they've never been in trouble for anything. In fact, my 17 year old is well on track for a career in law enforcement. He's never had alcohol or smoked pot in his life. He gets excellent grades and promotions in his law enforcement cadet program.
My mom is proud of him, but she kind of downplays that.
I think part of the problem is that I was my grandparents favorite. I was good to them, well behaved, respectful, I minded my manners and I didn't act like a wild child. I didn't have a smart mouth, I wasn't rude or bossy. My mother allowed that behavior from her, but she was on me for every little thing.
I had to be perfect.
Family members noticed that dynamic. It didn't endear them to my sister.
My mom is protective and frankly ignorant of the things my adult nephew does.
I don't know why.
I just know that my kids had to learn to have their own relationship with my mother without comparing her relationship with their cousin. Anything otherwise was a futile attempt.
My mom even has a great grandson now, and still, her special favorite is my nephew.
Bonds are bonds.
I can't explain on which level she has bonded with him so deeply, but she has. It can't be changed. It is what it is.
My kids just have to love their grandmother as they do and let the rest go.
It's not like she EVER forgets a birthday or Christmas, Valentine's Day, St. Patrick's Day, Easter..........
She doesn't exclude my kids.
But, she's done WAY more for my nephew. She paid for his driving lessons, she's paid for his driving license, she's paid for basically anything he wants.
My sister is married. She and her husband make a nice income.
I've raised two kids alone for 16 years. She doesn't help me.
She says that I am the one she always knew could take care of herself.
Whatever that means. I guess it's a compliment.
I'm lucky in that I had a girl and a boy.
I could always say, "You are my favorite daughter".
It was the absolute truth.
I could always say, "You are my favorite son".
I was the absolute truth.
They were 10 years apart and so very different, they could both be my favorites with no problem.
Grandparents have different bonds, for whatever reason.
You have to let your kids know that it's not about them or anything wrong.
And.....favorites can change from day to day.
"You're my favorite grandson for helping me take out the garbage".
You're my favorite grandson because you draw me such nice pictures".
Grandparents can have favorite things about each individual child.
That's what I would try to let your children know.
Just my opinion.