The bride-to-be's reasoning for asking Duffy to step down was because she was hoping Duffy would be "a part of this whole thing".
"Please don't feel you're letting me down, I am asking you to do this. I am asking you to do this," the email said.
A stunned Duffy was then asked to return bridesmaid outfit — a jumpsuit — "so another girl could fill in and wear it", Duffy said in her tweet to airline.
The airline, JetBlue immediately jumped on board to help out, offering a "future girls' weekend" on them.
Duffy was overwhelmed by the response, tweeting on Saturday:
"Wow, did not expect this response — clearly the situation resonated. Thanks @jetblue for providing the refund I was hoping for, and thanks to everyone for chiming in with well wishes, humour, and even devil's advocacy."
Duffy's story prompted others to share their own stories of brutal bridal dumpings.
But some people didn't understand why Duffy was upset and thought the email was a reasonable request.