Hi Jo,
I got several books while I was pregnant, one was The Pilates Pregnancy by Mari Winsor. If she's not into Pilates, try Expecting Fitness by Brigitta Gallo. Both are excellent. I would also recommend Tracy Hogg's books: Secrets of the Baby Whisperer and Secrets of the Baby Whisperer for Toddlers. (I think they even have a video version now.) In the book for Toddlers she deals with the new arrival's effect on a toddler. I got the book for my sister-in-law when she had her second child and she raved about it. (Her 3 year old told her when they brought the baby home she was ready for her to leave now, and this was not even an hour after they got her home!) Hope this helps!
Tricia