Is she in the town of Hollows or is she still within the compound walls, just outside of the building? There's a vehicle bay, but there are a few empty rooms she could take nearby to create a garage. If she's in Hollows, there are plenty of abandoned ones attached to homes, and even professional mechanic's garages. There aren't many spare tools in the rooms inside of the compound, but pretty much anything someone would need for vehicle maintenance is kept there. The garages in Hollows are up to player choice!

But if she does take a look through the vehicle bay, she can find a speaker that had fallen off of a table and down between the wall and said table. It only plays static... for now.