I was gone for less time and had the same case happen to me. Really easy to lose track here.
Multiple new videogames and enough slow days had me fall out of the habit of checking the place.
She once wrestled me into a brier, but that's the end of the physical abuse. :) She could get pretty mad though, and often for inconceivable reasons, but it never went beyond shouting.
What diagnosis did she get? My mother has never been officially diagnosed, but she has been committed (against her will) into various homes and hospitals because she was deemed unfit to look after herself.