57 Year Old Widow

My husband passed away in July 2011, he was 67, he was collecting full ss and unemployment. I do not work am I required to file taxes at the end of the year. We always filed a joint return in the past.

Recently Widowed Grandmother...

(Columbus, Ga.)

My elderly Grandmother has put my father on her banking account and I believe he may owe back taxes, can the IRS put a lien on her account for his back taxes?