Vehicle security for long road trip

IMHO:
Remove a tire and bring it into your room at night. Leave it on a jack stand or make a bolt to the lugs adapter like a club foot.

2nd idea is a chain bolted thru the yoke on the drive shaft to the wheel. Again jacking up to prevent the car from being moved. I saw a guy once mount an air horn under the hood under the battery tray with a removable switch he placed just under the tire. If the car moved backwards (like being towed) it made the contacts and set off the air horn. If you nose into to the spot. The switch went under the back of the tire. If you back in it goes under the front of the tire. Simple plug in set up.

If the car being stolen is that mentally debilitating; then don’t take the car. Luckily people are mostly good but the bad are really bad. I hope that makes sense.
I wish you well on your journey.
Syleng1