Theory.

We know she's been spending time in Minnesota/Wisconsin for the past month and a half with her mom and her sister. Someone else on this thread mentioned she's moving to LA, not Tucson. If you drive from Minneapolis to LA, as you would do if you are hauling your stuff, you would not stop through Tucson (or Arizona at all really) as you would most likely cut through Nevada/Vegas - UNLESS you want to stop in San Diego/ Carlsbad to pick up something(s) on your way up to LA. My guess, this is a hotel/AirBnB and she wanted to post one more fire pick before she possibly ran into Garrett getting the last few things from their shared apartment or anything he accidentally grabbed. Post it a few hours before you get there to make sure he's seen it. I would 100% do that.