You are a brave woman with 5 kids, two of them so young, taking on a puppy besides. With all that spare time on your hands,
you're going to have to get that puppy playing during the day so she'll be tired enough to sleep at night.
How old are your other kids? When dogs have nothing to do, they often just sleep. Those kids need to keep her busy and playing so she'll get into the family's routine with her days and nights like everyone else's.