Although I said above generally that paternal gransmums aren't as close as DiL mums it can make a difference if you live nearby. My DiL is very close to her mum always has been.
Like some other paternal grandmums I am aware that DiL will always have a bit of jealousy if I get too close to DS despite no attempts on my part to try and hang onto him in any way,
its just how things are - have picked up the message now and then
However if I lived close it would be different as popping by's including enjoying the children - no problem. Not a threat, as it were.
However even then there are particular circs which is that Granddaughter is so disabled it takes a special carer to be able to come in and baby sit, administer drugs, cope with potential epileptic fits etc.
Also reflecting on "expectations" and family histories. I had next to no input from grandmothers/fathers in my own growing up and neither did DH of the time. Saw that as normal.
So I didn't seek it out strongly for my own child and there were difficulties even had that been the case given what they were like (grandparent severe illness and distance, my mums obvs dislike of all her children husbands, except for my sis's husband who was a consultant none of them were ever good enough)
So my DS was not used to close family network - then he married into a family with very close family ties and DiL turned to them naturally and as the dominant partner emotionally made the running. .
It worked OK when I was able to go up and stay with them and one year for very close to the children but with CFS I cant do that atm. (very cramped, very noisy, have to sleep in through room etc. I wish they would come and see me, as they do DiL's parents - but DiL's parents have a spacious house and energy -
it's best to be realistic and have phone calls and WhatsApp's and keep up with them in that way for now. Over all message -yes I come second to DiL's parents but I accept that, and they have helped the family a great deal financially and for DiL support over disabled child, chat phone calls etc.
DS is nice and chatty on the phone - count blessings.