I assume, Jason, you no longer ride with her?
That's interesting about you '93 Grand Cherokee. I had a Canadian model '93 GC with a headlamp circuit that was on all the time when the car was in gear and running. All of a sudden, for no apparent reason, after 280 k miles, the headlamps decided to stay on all the time, no matter what--key on, key off, key out of the ignition, it didn't matter. The only way to turn them off was pull the fuse. Since there was other problems that were going to require big bucks to fix, I didn't want to spend a ton on the headlamp circuit, and sold the thing--cheap!
Never did find out what was wrong with them, and I was sure it was some $5.00 part. Problem was, I tend to spend thousands finding the correct $5.00 part to replace!