Confused and Dazed
Yes, the shirt was somewhat sheer and exposed her cleavage, but she had taped it down earlier to be extra modest. Before she realized what had happened, the stewardess tried to cover Harriet’s body with her hands! She was startled by this and couldn’t believe it.
Compromise
Though she didn’t want to, Harriet went to the restroom and put on another shirt, coming back to see the other passengers staring. She was humiliated and gave the stewardess a piece of her mind. That caused the flight attendant to tell her to get off the flight, causing Harriet to cry and stand up.