Join in playing, it's fun even if we're left feeling worn out, it's worth it as is only for a few years. I miss one to one time with my daughter now she's a mum (18 months), as does she, but her little one has been very ill a lot of his little life so he deserves all the attention he asks for, he knows Grandma is good for cuddles and will join in some games and we really enjoy each other's company. My daughter and I make do with late night texts for things we can't discuss in front of him. We have had a couple of evenings together in recent months and they've been lovely, you will start to get some 1:1 again at some stage but your daughter needs to enjoy her children as they're little for such a short time. Sit on the floor and enjoy playing again, even if like me you do need help to get back up afterwards. Your daughter sounds a lovely mum, remember you taught her that skill so be proud of her and of yourself.