Let me reiterate: it was a WRITTEN record of our SHOWER times that she kept EVERY DAY. I wish I still had this timesheet to enter as evidence for my therapist.
When I needed to take a longer shower, say, after cheerleading practice or before a date, I would have to plan shorter showers for days and save up my leftover seconds to tack onto my next shower. I took three-minute showers for a month so I could save up enough time for a lengthy shower before my prom.
We could also EARN extra shower seconds (boy was I lucky!). And I think, at one point, I might have traded my sister her extra shower minutes for a pair of my shoes. But that may have just been a situational hallucination. Who knows?