Maysilee Donner was one of the two female tributes from District 12 in the 50th Hunger Games, along with Haymitch Abernathy and a second male and female tribute. The usual number of contestants from each District is two (one male and one female) but because the 50th Hunger Games was a Quarter Quell, the Capitol demanded that twice the number of tributes be reaped for the event. During her time in the arena, she escaped from the Cornucopia with only a blow dart gun and some food, but was resourceful, dipping the darts into the numerous amount of poisons available in the arena and killing the other tributes by shooting them. When Haymitch was about to be killed by a Career tribute slicing his throat, Maysilee shot the Career with a blow dart filled with poison and killed him. She arranged a temporary alliance with Haymitch, but she broke it when they were in the final five because she didn't want to have to kill him. She died only minutes after parting with Haymitch, being attacked by a large number of bright, candy-pink birds who used their sharp beaks to fatally wound her in the neck. Haymitch held her hand and stayed with her until she died.
The mockingjay pin was originally hers, and had been passed to her niece, Madge, who eventually gave it to Katniss as a tribute token. It later became a symbol for the rebellion against the Capitol, worn by Katniss Everdeen.