Boy, this one speaks to me. I have found being a SAHM to be one of the hardest jobs I've ever done.
Since you're a newly wed, you might want to just come up to her and say, "Honey, I'm giving you a day off. Call a girlfriend, go to the mall, library, coffee shop, whatever, and spend the day. I'll watch the kid, and do all the chores around the house and have a nice home-cooked meal waiting for you at about 6:00 this evening. And, after we eat, you can play with the kid or watch the telly while I wash the dishes, and get the kitchen cleaned up. I'll get Junior to bed for you, while you take a nice soak in the tub. I know that once I get the kitchen sink shining, the floors swept up and Junior bathed and in bed and asleep, I'll certainly be in the mood to just go right in and have wild monkey luv with you."
Really, I'm not joking. It will give her a much needed rest, and you an insight into just how hard her job is. And, if you think, "Why should I have to give up my day off to do her job", keep in mind, she no longer has 'days off'.
After you've walked a day in her shoes, and she's rested up by having a girl's day out, the two of you can work out some kind of schedule to help get things done. Encourage her to check out Flylady.com, a website devoted to organizing housework. The tips are really helpful.
If the house is really bad and if you're working 70 hours a week, you might have the finances to call in a maid service just to get the house back into order. If y'all come up with a good cleaning schedule, and Fly Lady will really help with this, then things will be easier to keep clean. It takes a lot of effort to get a house back under control once it spins out that way. (I sound like I know what I'm talking about, don't I! :wink: ) If the finances don't cover a maid service for a day or weekend, keep in mind that it will take a lot longer to finally get things organzied. So, be patient. Give her plenty of loving support.
I promise, it will settle down. Just keep in mind that the house is overwhelmingly depressing to her and she feels like a rotten failure. I know I did, and still do every now and then when the house spins out of control like it did these past couple of weeks when my f-i-l was so sick. Now I'm being called in to work everyday and the house is a shambles. Only now, both my hubby and I know it will get cleaned up eventually and things will settle back down, because after a while it always does. She needs loving support and help to get things back under control and a good schedule to keep it that way. And loving support. And support that is loving.
PS, if you follow my advice about giving her a girl's day out, baby-sit with Junior and offer to cook a nutritious and delicious home-cooked meal, ready by 6:00 and served up in a clean house, you might, just might, want to keep the pizza guy's phone number handy. Just a thought.