I have a little suggestion for dad...i had a preemie and to make sure he ate we used a dropper sometimes to drop it in his mouth and sometimes he would taste it and get more interested.
A little idea for you could be to eat a lot of yummy sweet fruit while pumping and that will be what she has with dad and eat veggies and regular food when she will be nursing from you.
I brought my son to work with me at 5 days and he went on the bottle with gma at about 8weeks...there was a transition period to get use to it...i would continue pumping at work every two hours even though when i wasn't home he would eat every three or four on the bottle...then he got use to it and did go back to the every two. He's six months now and just broke both of his bottom teeth through this week and he has been putting a lot of time between bottles for the daycare he just started but also at times he wants to eat every two...so its a toss up.