DH doesn't get up in the night when he is working - he gets up at 6 and doesn't get home til 6 so in a way I don't expect him to. Having said that though, there are exceptions, the "she doesn't like me" is a cop out for sure. DH used to walk Iz around the house sometimes for up to an hour to get her to sleep at nights while I went to bed and that was after a day at work. He loved the time with her even if she was Miss Cranky Pants. On the weekends I would give him one sleep in day and I would have one too - but we often compromise.

If I have had a cr@ppy nights sleep(most nights right now) he will get up with her (he's been home from work for a few weeks) no matter what time she gets up. We also have to change nappies in the night to stop her wetting through. Most times DH falls asleep on the couch and comes to me to get me up to do it when he comes to bed - recently I have put my foot down and said he is up anyway. He worries because we have to wake her to do it and worries he can't get her back down - he did it a few times this week without a hassle though so I think he proved to himself that he can do it.

As a PP mentioned hun, feeding isn't all there is to motherhood and I think if you both sit down and talk about how she can help you most it would be good for both of you. It is tough hun and I hope you can come to an arrangement where both of you feel good about it all. She might be feeling a bit left out too but that is no excuse and spending more time with Jaz will help with that anyway.