security
Well first of all, I never keep any password information on my computer. I used to but then i found that even though it was a secured file that it could be hacked and then where would I be? Also I have traded computers several times-that kind of stuff never goes away-even with overwrite programs. Your only recourse is to take a sledge hammer to your hard drive. Also there are several worm type programs that can eat up your passwords and then spew them out to some hacker. What i do now, is to keep the same type of files but only in a master book. I know. Someone could open the book and have access to the info but i keep it secure.
As for the issue of the will and the ff miles, I would say that I have a real question as to whether they are inheritable. Just because you possess them at time of death doesnt mean that you can inherit them. I have a rented water softner too, but you don't get to inherit that if I die. I believe most ff mile programs specifically state they are NOT inheritable and it would take a whopping amount of points for me to consider challenging that language in court (and I am an attorney). Also the rule for intestate succession in most states would say that if those points are inheritable (which I doubt) they would have to be split and dispersed to the heirs at law which would include any children. If the original poster has children and there is no will, then she doesnt have a right to ALL the ff miles anyway.
As for having an updated list of bequests, I believe that is possible given the correct procedures and precautions to update your will without a complete rewrite. Yes, your will should be reviewed in its entirety ever so often and after life changing events like marrriages, divorces, births and deaths. The Michael Jackson will might be instructive as to this.