by arvad » Wed Dec 21, 2011 10:33 am
you actually have two problems - first, as a land/house owner, you can enter the premises with the proper notification (usually 24 hours, but check with your State's Attorney General's office). If you want her out, by state law, she has probably established tenancy there, which means you have to file for an eviction. Again, ask the AG's office when you call.
Your second problem is the fact that your sister is giving away your mother's stuff. This is a probate court issue. Since your mother died intestate, the court should appoint an executor of the estate who's job will be to pay off any debt sowed by the deceased and then to divvy up the remaining assets as per state law. Contact the Probate Court/Probate Office in the county where you rmother died for more info.