Tyler, Set up a budget that will allow you to cut down the hours. If that means she has to, the gods forbid, work (oh, what a nasty, nasty word) to pay for her nails and jewels and lunches and coffees...and oh, yes, let's not mention the phone bill...then so be it.
Don't work yourself into an early grave for this woman. You're right. Let her step up and be counted in your marriage. You need time with your kids. You NEED time to decompress. It's medically proven so you just need to sit down, work up a budget (minus all the extras) and have the extra budget handy so she will know how much she'll have to work to continue in her current lifestyle.
Take a break and enjoy the day. I've almost worked myself into an early grave and I'm not going to ever go there again. Temporary tops in work are acceptable, as now when I've just switched jobs, but eventually it'll be a standard work day.
Have some fun today. Get a breath of fresh air and enjoy life!