Thats a hard one and really thier is no one answer that will work, I have been married 17 years and have 7 kids, and still haven't mastered it, I can say that I have four who are older (14-16) and then a younger set (6-1) and have the help of the older ones, but I can remember trying to do it all with the older 4 I too worked w/ them but don't now. Is it possible to leave your daughter at her grandparents house for an extra hour everyday so that you can go home get dinner started, and maybe throw in a load or two of laundry? If that isn't possible, trying prepping for the nexts days meals once everyone has gone to bed, there are plenty of nights in my house were I am the only one awake trying to get things ready for the next day, I don't get a lot of help from the husband but that is more by choice, he works 6 days a week 8-10 hours a day and when he is home he does try to help but sometimes he just gets in the way, setting up a routine is the only way i make it to the next day, and I stick w/ the routine even on the weekends, but give them a little bit more leway. I try to put my husband and kids first, but that just isn't always possible, but it is usually my husband who is pushed to the side, he is pretty understanding, knowing the kids won't always demand all of attention, I can remeber as a young girl my mom did meals for the week on sunday she was a single mom and worked during the week, I tried that but just don't have enough fridge and freezer space for it, w/ the amount of food thid family eats, one other tip I have is to make one meal that can last an extra day, buy a pork roast, throw it in a crock pot before you go to work with a few potatoes and carrots, and there is one meal, then the next day use the same meat and make tacos, prep the tomatoes and lettuce the night before, if you buy a big enough one the next day you could get some get some egg noddles(cooked) and can or two of cream of mushroom soup w/ a little sour cream throw it all togather and thier is another, if you plan your meals right you can make it very easy, shop w/ a list and look at something and say how can I stretch this one extra day, I always pureed waht ever we were eating I didn't cook anything special for them, I just bought one of those little chopper things and it alwasy sat on my counter, I did buy the veggies and fuit from the store and just kept them on hand for those nights where nothing seems to go right and it does happen.
I know I am rambling but I tought I would give you a few ideas from a mom who has some expierience in the juggling act of parenthood, my house doesn't always run smoothly, but a few simple things can make it be slightly easier. Good luck hope I helped a little.