[DonDavis]

Mike, Mike, Mike.... this is a tough one. She needs a wake up call. SOON!

If you are providing her a home, then you have every right to ask about her finances. Don't kick her out just yet but she needs to know that what she's doing is wrong. Plus, it's adding strain to your marriage, right? Strain that would otherwise NOT exist.

Now, you have some responsibility in this as well. Were the guidelines clearly defined prior to her move-in date? Length of residence, rent, household assistance, etc...

I would talk to the wife, agree on a FAIR plan, then have a discussion with sis. Allow her to tweak the plan so she has ownership as well. If she can't pay rent, that house should be cleaned by her every week. How much time would that save you guys? Vacuum, dust, dishes, laundry. Physical help is worth something.

Just a few ideas.

Don't wait any longer. Address this soon and good luck.