S.J.
Hi L.,
I would start by having your husband put her to bed with you and gradually, let him do more and more. I used the , "Mommy has to go potty, I'll be right back" and extended the time each time. At first, I'd leave and come right back, then I'd stay gone a few minutes. Now, Daddy brushes their teeth, I put on their PJ's, daddy reads them a story and then I go in and kiss them good night with him. The kids love it and we both participate.
My older son sleeps pretty well, the younger one (3 1/2) still wakes up almost every night. Some kids are good sleepers, some kids just don't require much sleep.
Good luck!