I’ve seen multiple people jokingly stating, that this was Betty’s last great act of her perfect comedic timing.
People had their “Betty Turns 100” issue on the stand and she was quoted as saying she’d give us all the secret to happiness at 100…and then she dipped on us three weeks early.

Somewhere she’s laughing about it.
As for me, my birthday is January 13th and I will be having a 100th birthday themed dinner in her honor.