[Sansa nods and decides to give the keys a chance. If the switch works, they will be in luck. Otherwise, they will need to find who has the lock that fits Claire's key- or Sansa's and find out how to nicely ask them to vacate.]

Let's give it a try. I have done much more difficult things in life than try a key in a few doors. We should assume it only works in this building, right?