I'm looking for some insight and advice on best thing to do.

My wife and I have been married for 7 years. We have her two children and our Daughter. My wife lost her Job in Dec of 2012 because she got her 4th DUI. When I lost her income we lost the family vehicle to the bank and things have only gone downhill. She owes Thousands in fines and court costs. Spent most of 2013 in jail and is still not in the home because she is in court ordered treatment. Here is my biggest question. She cashed out all of her company stock and 401K. She took all that money and used it to pay fines, probation and etc. I'm doing our taxes and we owe 11K and I cant afford to pay that. Our home is in my name. I bought our home before we married. Should I file taxes separate? She owns nothing so nothing the IRS could put a lien on. If I file jointly the tax bill drops a bit thanks to more credit but I'm afraid there would be a lien put against what I Own. Am I correct? I'm not sure what the best thing to do is.