What kind of support network does she have in place? If her parents/siblings are around and trying to get her to take off occasionally too, perhaps you all can work together. Being a single mother, especially of young kids, is not the same as being a non-custodial parent. My grandchildren have both their parents and grandparents, uncles, etc. to help babysit but my son and daughter-in-law rarely get away "alone" even though they get some individual time. I don't know that it's feasible at this time for her to be away from the children that much (or that she wants to be) at this time. They are too young to be very much self-caring yet and with only one parent, their routines and needs are different. My son can take the kids for a few hours on Saturday morning so my daughter-in-law can sleep in or get chores done and we come once or twice a month so the daughter-in-law can go out and get "caught up" at work (both parents work) but I think if your girlfriend were able to have a weekend or two a month off, she'd have other things she'd want/need to do with the time.

I applaud your wanting to take her away for some "adult" time but don't think that's #1 on her wants list? I wouldn't take it personally, wouldn't think myself selfish or her unreasonable but would try to help her more if I could, take some of the single parent "responsibilities" off her hands/give her a rest from them, help with her chores so she has more time, period, to structure how she'd "like." Maybe having some of her time constraints loosened will enable her to think about getting away with you for a quiet weekend every now and then but I don't see how she can easily even think about that now? Help her restructure and be there for her with what she chooses to be responsible for and then maybe she can trust the "system" enough to go away. It's not an "automatic" either/or thing though.