No, she doesn't think I'm losing my mind - she knows I lost it a long time ago for a myriad other reasons!
When my gf and I first met, she wanted me to set up a 60g tank in her apartment.
When we went house shopping, one criteria was whether the house was "fish worthy."
As long as I keep the washer/dryer easily accessible, I can make the entire garage into a fishroom. And keep the tanks in the house.