Spoiler warning: Plot and/or ending details follow.
After the murder of 4,000 colonists by former Governor Adrian Kodos and his supporters, Apodaca noted a number of her co-workers were amongst those who died in the massacre. Also included in the casualties was Apodaca's boyfriend, whom she had just started seeing a few weeks prior. Having lost his own significant other, the news of Apodaca's loss touched a nerve with Lieutenant Commander Gabriel Lorca.
When asked about the possibility of an insider sabotaging the plant, Apodaca told Lorca and Ensign Terri Bridges that a week ago she would have punched them both in the mouth for even suggesting that, but now she was willing to consider the possibility of a saboteur. (DSC novel: Drastic Measures)