When Chester mills had the visitors day, her knowdlege of sign language allowed her to facalitate communication with the people on the outside of the dome. <(http://www.starnewsonline.com/article/20130824/ARTICLES/130829817?p=2&tc=pg)
Dodee saw Big Jim listening to the radio and heard from the military that Big Jim murdered Coggins, and when she told him of the mini-dome's location, she threatened him that one day the people will find out about his sins. In retaliation, Big Jim shot and killed her.
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