S.L.
They don't always want a deep answer, just that they are thinking and learning and always talking to find out things but sometimes 'why' is just another question but not even in need of an answer. Just say, " Oh, I don't know" , or " What do you think?" Or even a silly answer and both laugh at it. As for the no quiet time or nap I would take charge there and say it is 'quiet time' and see that it is. She could color or look at books, etc. but should be where you are not and where it is quiet. I would enforce that. I raised 8 kids and some of them outgrew naps but still we had a quiet time. When they were older they could go outside and play while the others napped but kids today would say "What's play outside?".