Call the hospital you're delivering at and ask them what you HAVE to bring and what you cannot bring (just in case). After you have an idea of what the hospital will provide for you decide what comforts you'd like to bring from home. Always remember to bring super comfy clothes to wear home, a robe, your camera, chapstick, cell phone and cell phone charger. Don't forget about your baby too (I know this isn't your first)... going home outfit, nursing essentials if your nursing, bottles(if you prefer a paticular kind) if not, and some hospitals require you to bring your own pacifier if you chose to use one.
As far as your daughter's bag (I'm assuming your 1st child)... the essentials (change of clothes, brush, toothbrush/toothpaste and etc), a couple of her favorite books, coloring book and crayons, snacks, some hospitals have a dvd player so find out if they do because that kills an hour or so (if they don't maybe bring a portable one), and a favorite toy/stuffed animal (only one because you don't want to worry about losing more than that).
For the both of you... bring your own pillows. The hospitals have plenty of blankets so not to worry there.
I can't think of anything else off the top of my head, but I hope at least this will help. CONGRATS!!!