I'm confused.

Situation: a pretty normal day, but Boss's favorite (the nephew's friend) was on the phone most of the morning and then left early. She lets him (and only him) talk on the phone and arrive and leave as he pleases, so I couldn't do anything about it. A pipe busted and flooded part of the store, giving us quite a mess to clean up. Yet, customers were taken care of. The store was run. Money was made. Shelves were stocked. However, one routine task was not yet done when boss arrived. She was mildly angry, even after being told about the flood and employee issue. Why?