User blog comment:GianG/Bloodbath: the unnamed tribute (Bagno di sangue: i tributi senza nome)/@comment-99.183.236.142-20140604033909/@comment-4344174-20140606191341

I believe (like many others) that Foxface commited suicide with the berries.

My evidence? She was shown excelling in the plants and insects game/training post in the Training Center. She was also mentioned to have been extremely emaciated. And in the film, she was still up against Thresh, Cato, Katniss and Peeta. She knew she wasn't as strong as them, so obviously, she ate the berries, knowing she would die from them.