Approximately two weeks before the incident.
The first time the veil over my vision lifted and I was able to see a hollow was at the live recording of an episode for Don Kanoji's show. It horrified me and not solely because it was a terrible sight but also because I feared for Ichigo when he began fighting it. Of course there was not much I could do, I was anchored in one spot by my siblings and my weakness; there was nothing I could do and I hated that. My body had shook with horror and anxiety and a terrible churning feeling tore through my abdomen. I wanted to be strong but I was not. Not in the sense that Chad or Tatsuki were and definitely not in the sense that Ichigo was.
I was not completely defenseless but my tall and slight body type left me at a disadvantage for the lack of muscle and brute strength but I knew how to work with what I had. I had taken martial arts classes for years and while I was not particularly strong, I was quick. I stuck to quick strikes and evasive fighting maneuvers but that wasn't enough to fight something like a hollow. I could not do anything and worst of all my fear prevented me from moving even if I had been able to help.
I was weak and powerless to this new world exposed to me now and I hated it.