why is she so angry?

My wife is angry. She is trying to sleep but the noise of the keystrokes is getting on her nerves. She heaves a deep sigh in exasperation and covers her head with a puffy white cotton pillow.

She must be tired -- after all, she's been out all day. This morning I dropped her at Central Market so she could attend a gathering of businesswomen -- the sort of networking event where one could expect to exchange many business cards, leads to a few jobs or sales or customers, maybe even new partnerships.

She was just finishing breakfast and talking to her mother on the phone when I got ready to leave for work. Just then, I recalled the reminder that had sounded on her mobile earlier that morning -- I had picked it up, noticed this meeting at 11:30 and asked her about it. She seemed unsure about whether she really ought to go. Now I asked her again. It was nearing 11 and she brushed it off again. I insisted that she ought to if she really thought it interesting enough and she came up with the same reply.

"Well okay", I replied. "Are you sure though?".
"Yes".
I bent to kiss her goodbye and just when I straightened up, something inside her flipped and she suddenly said "Or should I? Maybe I should".

I gave her five minutes to get ready.