Well, I guess I should update this since I did go in and talked to a branch manager when I had time...
It seems that there is NO power of attorney that I can have to cash in a savings bond..... they say it is the rules of the gvmt and not them... I was willing to bring in my mom to sign whatever they wanted so I could do it going forward and was told this.... he did consult with someone so I believe him on this...
Now, the strange info on this.... my mom has an expired drivers license and an expired passport... so neither of those were good to prove who she is... BUT, a medicare card and SS card is good!!!
REALLY
Two cards that do not have a picture of her or a copy of her signature will work but a driver license or passport that have both is not....
I had both so I cashed what I needed... the branch is just around the corner from my mom's assisted living so I will just put this as a stop when we take her out to lunch whenever I need to cash some more... the only bad is that the safe deposit box is at a different location and the new branches do not have any.... but once every two months is not that bad...