Of course I went to work

My sister came into my room last night and said: Can I ask you something without you getting all angry?

I agreed and she asked: Did you even ask if you could not go in tomorrow? Tomorrow meaning today, the day the government shut down. We cleaned our desks, set our out-of-office reply, forwarded the phones and signed a furlough notice. Then we left. I was home by 10 a.m.

I told my sister no I didn't ask; they told us to come in.

She replied that my bosses seem to like me so they'd probably let me work from home. They do seem to like me and would have let me not come in, I agreed, but I said they told us all to come in.

So why wouldn't I?