Some of my GC have seen me naked and having a wee! - and they are intrigued by Papa's catheter bag the plumbing of which they fully understand! So, no prudes here.
But.....I would not sleep naked with any of them, and I do not think that you should OP, because your DD does not like it. When you are on your own (or accompanied by an adult!) then that is fine; but you should respect your DD's wishes.
ON the subject of art books, I have the book "1000 paintings you should see before you die" and my DGD (6) loves it and sits quietly studying it, especially the painting that has all the hallmarks of an illustration in a gynaecological textbook - she just looked and moved on.
Passports not in the drawer I always keep them in. Turning the place upside down.