Why did Ms. Sato postpone her trip?

M: Do you know why Ms. Sato called a meeting for 11?(45)I thought she was leaving for Chicago this morning.
W: She was, but she delayed her trip a couple of days. She apparently is not happy with the proposal we put together, and she said she couldn’t possibly present that in Chicago today.(44)So, she called a meeting this morning to talk to us about it. Anyway, we’d better get going, or we are going to be late. It’s almost eleven o’clock.
M: I hope the meeting will be short. I have to meet a client at 12:00 for lunch on the other side of town, and I have to leave the office by 11:30 at the latest.(46)
W: Well, I am sure that Ms. Sato will let you go early if you tell her about the situation before the meeting starts.(46)