You file a Will in the probate court after someone dies - you do not file before death unless the court has a system in place allowing you to 'deposit' your Will for safe keeping.
You indicate your mother made changes to her Will and that gives the appearance she is alive.
People update their Will for a variety of reasons. Until you die, you can change your Will as often as you like as long as it is within the statutory requirements (you are of 'sound mind', etc).
Answered on Aug 23rd, 2012 at 3:35 PM