
With my own girls they will stay glued to their pups and needing to be taken out for the first three days. After three days they will more willingly leave the box, and by 5 days lie outside the box, but often lying with pups too.
By a week old they pretty much prefer to lie outside the box, and by two weeks are joining more in family life, popping in regularly to feed them.
By three weeks (sooner if she is happy to share her family) they are in a pen in the kitchen with the rest of the canine family, and Mum is happy for them to pop in and meet them, and only goes in to feed and clean.
At 4 - 5 weeks mien start going outdoors and Mum starts to keep up out of their way (garden bench, and indoors they can't reach her because they are in a puppy pen, she is free to come sand go to them as she prefers, some seem to leave it to me, others are more paws on after 4 weeks, but the whole gang play and interact with pups from 6 weeks, most of the older girls ignore them until then after an initial sniff.
I have had one who was not to keen to clean for first day or two, looking thoroughly disgusted but got the hang of it, but always pulled faces doing it. she had three litters LOL