You jinxed it by first talking about it before you actually closed.
How badly do you and your spouse want the house, and how much of it is a steal?
Find out how much she wants…This is one of the times I guess you just need to swallow your pride an pony up the dough. Call it blood money or whatever, but doesn’t seem like the “religious” nurse has much of morals/ethics herself. So you shouldn’t feel bad either….
I wouldn’t leave a paper trail of what you’re doing either, unless you’re just hell bent on getting her in trouble. Then I would leave as much papertrail as possible, as I doubt she has the marbles to figure out what’s going on.
I would also definitely find out where-else she might be behind (hoa payments, prop taxes,etc,etc,etc,etc)