Because she sang Rue to death. Rue is Thresh's other district tribute.
thresh thinks katniss is a prostitute
The final tributes are:KatnessPeetaTreshCatoClove" Foxface"
Because She was allies with rue and she covered her with flowers and sangnto hernwhile she died
Katniss doesn't kill Glimmer, Thresh does. And he smashes a boulder into her head, which kills her.
She tries to explain why Tresh saved her.
thresh thinks katniss is a prostitute
Tresh didn't hurt Katniss because Rue was Katniss' ally and Katniss avenged Rue's death.
Thresh saved Katniss at the feast.
Katniss had no personal connection to Thresh and it is not stated if Thresh's mercy was shown to the districts. It's likely that only Thresh and Katniss saw him giving mercy to her.
Because Katniss looked after Rue, Thresh's district partner, and she didn't kill her, she even looked after she died and she tells thresh this and he says just this once and runs off.
The final tributes are:KatnessPeetaTreshCatoClove" Foxface"
Yes that's why thresh let katniss go
thresh
thresh
Because She was allies with rue and she covered her with flowers and sangnto hernwhile she died
Thresh is another tribute in the first hunger games Katniss takes part in. He is from the same district as Rue which is (I think) district 11.
Katniss doesn't kill Glimmer, Thresh does. And he smashes a boulder into her head, which kills her.