Perhaps rather than saying anything I'd be more inclined to go around and spend time cleaning it all. You're daughter is an adult and mum, and I think she needs to understand that it's not about her anymore, yes there is untidy, and some times dirty, but it seems to be a pattern with your daughter, and really passive smoking isn't on. If it were me and my 2 year old grand daughter I'd probably get in there, muck in, sort the drains , and consistency but gently keep going.
Should women have equal pay and opportunities?
People eating and drinking on the go
To think that London, or anywhere else for that matter, does not belong to any one demographic