@TiredRetired I have read all your responses on here - your dislike or issue with your DIL really shines through. I’m not surprised she’s snapped to be honest.
Her parenting is “fine”, she’s “doesn’t have a circle of mum friends”, she “doesn’t do herself any favours” 🙄
You sound very similar to my MIL. I can assure you that your “subtle suggestions” are anything but and just feel like constant criticism and negativity. All of which seems to be aimed at your DIL btw, not your son. My MIL does this too - there’s always some comment to be made about my meals, routines, parenting choices, how I play with my child etc. And of course it’s passed off as her “trying to help” but it’s really that she’s an interfering cow and can’t see things not being done her way. She’s so negative that her energy is actually draining. And actually she barely sees or knows DS so her criticism and negativity feels even worse. I understand there is distance against you - there isn’t for me. MIL lives 5 mins walk away and sees DS for 1 hour a month.
They have routines and rules in place because it helps them. Leave them alone. Some kids thrive on routine and others are more flexible, same goes for parents.
And as for your DIL not having a circle of mum friends…neither do I. Because it’s bloody hard when your DH works every hour under the sun to try and maintain normal friendships. The small group of mums I know frequently meet up at evenings and weekends child free to bond and have uninterrupted conversation etc and that’s often where plans are made. I can’t go to these meetings ups as my DH works away for weeks on end and I wouldn’t expect anyone to look after my child so that I could socialise. So eventually I just stopped being asked to them, which meant being left out of plans with the kids that were being made. And when DH is home we prioritise family time as we get so little of it.
I also have a child who would never nap in the buggy regardless of how much I tried. So there was a stage where I’d actively avoid full days out. And this is despite weeks and weeks of trying to encourage pram naps. I’d walk for hours with him round our town just trying to encourage it, but all I was ever left with was an overtired cranky child who’s bedtime routine was thrown off because he’s fallen asleep late when we got home. The handful of occasions he nodded off it’d be for 10/15 mins rather than his usual 2 hours which also meant he was in a foul mood later. So a simple “just let him nap in the pram” remark at that stage would have tipped me over the edge - because it sounds like it should be so so easy, when in reality I was finding it extremely hard!
Please think about all these things. I guarantee just stopping making your “subtle suggestions” will help a lot. I don’t have a close relationship with my own mum (that’s the way she likes it now that I’m grown up 😂) and I’m so jealous people I know who are close to their MILs. Hopefully the relationship with your DIL can be mended.