Quote: Either way her attitude is, "Oh well. I gave you your chance. I did my part."
So, by that definition "initiation" isn't enough for me.
Okay, so she needs a better definition of "initiation", as well as some information about what you will and will not accept in terms of sex. "I did my part?" Not half! Not by a long shot. She needs to know that simply being physically present is not enough. You need to be clear that you will not accept absentee sex. If she "initiates" in that way, I would decline "the chance", go cool off, and come back and discuss it calmly - that is not married sex, at least not by YOUR definition.