Sell with the understanding that this is temporary. Communicate. Don't just sell, because she may, at that time, be thinking "well, that's over." And the next time you go to buy an interesting car, it brings back all the emotions and fears from this moment. Or, on your part, you sell the car and leave the life "temporarily" only to find, 20 years later, dreaming of "those days" and resenting your "other" for "forcing" you to leave a part of you in the past.
