If I push him to, DH will get up through the night. I don't expect it every night of him, and when I was BF, he would get up and bring DD to me and put her back to bed. We made a rule that if she is up more than once, then we would have to take turns. Yes, he goes to work to earn the $ to keep a roof over our heads, but if I am really tired from multiple nights of broken sleep, it could be a danger for both me and DD..
Personally I don't think you are expecting too much, but you really need to talk to Shel about it.. Maybe if it was only 1 night a week to start, just so you get a more undisturbed sleep.. Oh and DH used to pull the 'she prefers you' line, but now I give him suggestions on what to do, e.g try rocking her, try just cuddling her etc, and it became a lot easier for him...
Hope it starts working for you..

