To put it another way, dealing with external stink is simple. Internal stink is a different story.Even the smell can be easily fixed. Any chad can bribe her into having sex with him in the shower.
Regarding her entire place, Litter Boxes exist that are either covered or even self cleaning. She can stick that in the bathroom just to be 110% sure the rest of the house doesn't get stinky.
The REAL challenge would be turning the entire place upside down to remove the odor and just generally disinfect the place. Would take a few hours to an entire day depending on how bad it really is.