I’m in a similar situation and I think it’s quite common sadly.
Ex-husband’s parents live abroad (where he is from), so fair enough as we’re not in the same country it’s difficult for them. They do keep in touch and used to visit but are quite elderly so it’s not easy for them.
My dad passed away a long time ago, and my mum just isn’t interested. She lives a 10 minute drive away, but very very rarely offers any babysitting (daughter is 10). Often I get offered 2-3 hours per week of summer holiday, to fit in around her schedule of course 🤦♀️
the rest of the year she just doesn’t bother. If I ask, she acts as though it’s a huge thing to ask and then just says she can’t because she’s going out with her friends/ walking the dog/ taking part in a hobby. Not saying she shouldn’t see her friends or have hobbies, but for someone who doesn’t work and never really has, you would think she would have DD at least one full day a week in the summer.
I’ve given up to be honest. Interestingly, whenever we invite her on a day trip or a holiday, she’s miraculously able to reschedule her commitments, she’s only busy if I want help. I’ve stopped inviting her now as I’m sick of her coming along when it suits her but not being interested in helping me out or having a relationship with her granddaughter separate from me.
I do feel sad for DD as she has no active grandparents at all, due to a combination of circumstances and my mother’s choice not to be involved.
May sound harsh I know but in 10-15 years when she starts to have to slow down and need some help, I won’t be tripping over myself to help her. She watches me struggle with childcare now and just sits back and enjoys her life of leisure. Would much prefer if it wasn’t like this.