I don't think a wife should do more around the house, UNLESS she is not working (Working outside the home, that is. If she is working at home, it just kinds of depends on the number of hours spent working).
If my wife needed more help, she would likely NOT hold it in. It would be nice if she asked in the way NOP indicated. The way I would prefer she ask for more help is, "oh great and powerful Hairdog, could you please take out the trash after you're done ML to me, repeatedly, to the point of me having wobbly legs?"
