When you're bored, you read too much into things
I was reading backwards through bleach, drawing character portraits to absorb Kubo's powers, when I came across one line that made me wonder if something had been overlooked by members of the crazed fan base with generally bad hygene.
There is a particular scene in chapter 221 where Orihime mentions that Tatsuki has reported having felt ill and has not been seen at school. When my eyes, irritated and red from gazing at the computer screen, first fell upon this discovery, alarms and whistles blared in my head as the great gears of my fan fiction mental apparatus began to groan to life.
I decided I would go onto to the forums and make something of probably nothing just so that if my predictions actually materialized then I would be celebrated as a symbol of fertility and honorary member of the roman pantheon; then there would be at least two people who do that.
It stuck in my head that whatever the real reason for Tatsuki's absence you could bet the entire contents of a pedophiles pocket that it was related to her new found "bitchass powers" TM that everyone thought were essentially guaranteed, givin that she's totally smokin hot (my opinion only?).
I imagine a scenario in which her powers were stimulated to release either when she was kicking somebody in the face at her dojo or kicking somebody in the nuts who gave short change and as a result they bled organs or suffered comically unleathal passage through layers of concrete wall.
Feeling generally put off by the whole affair Tatsuki must have taken a personal day to wallow in the unrealistically painfull isolation of being the only one you know with "bitchass powers" TM.
So there it is. If we see Tatsuki out and about spewing lazer vomit or shooting daggers from her eyes that explode into more daggers like the banana bomb in worms armagedon, don't say I didn't tell you so.