INCIDENT: While we were standing to deboard, I am next to the last with the Flight Attendant behind me. There was someone in the RR, When she attempted to push past the flight attendant asked her very nicely to just hold on a second people where trying to still get their luggage etc from the top bin. Anyways the girl ignored the SW employee. Result-when she bumped into me- I am tall so the arm of the seat hit the back of my legs and I went over backwards. The arms form 1st and 2nd chair was my landing spot across my rib area with my arm (purse still attaches and not light) landed between the 1st and 2nd seat. The flight attendant was so upset with that girl. She was wonderful to me. She was trying to grab my arm to help me and I was like my purse and she is like just leave it for a second and I told I cannot because it was still attached to my arm lol. So she helped take the purse so we could get my arm out. If the girl could have just took a breath I could have moved into the seat isle for her to go by. I am so flippin sore and a bit swollen on one side of my ribs. If the girl could have just waited 10 seconds this would not have happened. I get it everyone was tired. There were 2 delays already. But truly what does kindness cost?