DGF, extremely glad it came out ok, lesson learned, use supplemental locks when available, hotel personal are not always reliable, I had reservations in a distant hotel, no problem got checked in and went to said room, opened the door with the electronic key, and good for me, I saw a disheveled bed, clothes and luggage, and thankfully not an armed occupant. moved to another room, but could have been nasty. When the occupant, use the secondary locking systems, and me, I might add to it and add a chair under the lock, or bring a door stop with me, not fool proof but just adds time to respond, but to respond, definitely not just your cellphone, pepper spray, wasp spray, Taser, handgun, shotgun ( if legal ) some device that makes a really loud and obnoxious noise that will make the folks around you call the desk and tell room 1234 to stfu.
What you do about the lax hotel personnel, is up to you, your daughter does have a good case.
Good subject.