Just poke some small holes in it now! Some where she can't find them if she looked. Just make sure your ready with some towels etc before hand and maybe release some of the water before you poke the holes so it won't make too much of a mess.
Does your son age 20 have his own room?? If so just tell him your taking his bed into your room until the new one arrives. Really all you need is his mattress.
Maybe leak something smelly on the couch or around that she can't find...maybe that would herd her into the bedroom?
Just throwing ideas out here....you have to think strategically against these wayward women!!!
