Oh, how lovely! I absolutely adore bunnies! I think they're a wonderful housepet: they're quiet, you can litterbox train them, they like to play games and love attention. My first pet was a Netherland Dwarf bunny named Killer. She lived to be an incredible 15 years old. I got her in kindergarten, and she passed away when I was in college.
I wish you luck with this litter! I bet mamma bunny is very proud too. What kind of bunnies are they?