Hi, Over 3 years ago I had floor of my mouth down removed plus 3 inches or more of my jaw bone. I had a femur flap that failed. They then gave me a titanium jaw bone.My Doctors call it the bar.They rebuilt my face with my shoulder and lining of mouth from wrist.It has been a long haul but I eat most everything, I talk, a lot. And most of all I am alive!I have one more plastic surgery to go, mouth stretcher and then teeth.The one thing I have learned is that even though we all worry about disfigurement, they can fix it! Cancer is the enemy, get rid of that then they can fix you up. If you had seen me 3 years ago, or even a year ago you would be suprised how I look now.I do not want to give you advice, just want you to know if jaw removed it can be replaced and plastic work does wonders. All this is covered by insurance because of reason for the fix up.Good luck to your Mom.