Mother-In-Law`s Visit Overstayed

I recently married my wife during a beautiful beach side resort wedding and an intimate 50 person reception. I`m from another state and my wife another country - so most of our guests were from out of town. My wife and my step-daughter just moved into my house a couple weeks prior to the wedding. For our guests during the wedding - I negotiated discounted rates at a local extended stay hotel for my family....However my wife insisted that her elderly mother stay at our place. We agreed with the understanding that all the wedding guests would be leaving a couple days after the wedding so we can get on with our marriage. My very thoughtfull Mother-in-law booked her flight from Europe so she arrived a week before the wedding and doesn`t leave until 2 weeks after. So my first 2 weeks of my marriage is spent playing host to my new mother-in-law who doesn`t speak english. Meanwhile my wife puts so much effort in showing respect for her that I can`t hardly touch my own wife...I have 1 more week to go - any suggestions on how I can keep us from getting divorced before she leaves?