The Deschutes County District Attorney is considering filing murder charges against a Bend man for allegedly attacking a woman on Christmas morning at a home in Bend.  The woman passed away after she was taken off of life support over the weekend.  Investigators say 35 year old Randall Kilby told them the woman fell and hit her head in the house in the 6000 block of Granite Drive.  But investigators didn’t believe him and took him into custody.  He was let out several days later pending further investigation and the woman – 43 year old Daphne Banks  –  was taken off of life support Friday.  An autopsy on her is scheduled for this week, and the D-A is waiting for the results before proceeding.  The Deschutes County Sheriff’s Dept. says Kilby has a long rap sheet, including 29 criminal cases he’s been tied to in the county since 2004.  Authorities say they’re still trying to assess the relationship between Kilby and Banks.