They technically have no obligation to pay in the case of any damage.
For them, the best possible course of action was to bury this case. However, now that it's come into the public light they're torn between (a) trying to re-iterate to everyone that they do not have liability and (b) trying to look good by doing the "Right Thing".
As a business owner, I feel for them. As a human being, I feel for her. I too am torn, and think that there is going to be no satisfactory resolution to this situation. Someone is not going to come away 'whole', and most likely it will be AirBNB.