How about a U-haul box truck? They have hitches. A friend of mine hauled his car from pgh to philly with a u-haul truck. I have no idea what it cost him though.
I believe Enterprise rents pickups at some locations. I know a guy who rented a Dodge 4x4 with a Cummins in it last fall. His company rented it for about 2 months. I think he told me it was from a location in Murrysville (behind Wendy’s).
UHaul does not let you tow anything with there pickups . They claim since they are only half ton they are not capable of towing . Thats the last that I heard. Get the box truck trow in her couch and now you have somewhere to stay .