Ellie has feelings for Nick Torres, but much like her coworker, she’s not too sure on how to express them.
Ellie had a chance to share her feelings when Nick was in a coma after he was involved in a hit and run, but instead she swore vengeance on the party responsible and buried herself in work.
In Ellie’s defense, Nick had been sending a lot of mixed signals, to the point she’s still relatively unaware that he is interested.
She may have also killed the person responsible for Nick’s hospitalization, which is obviously illegal, and the episode ended without much closure on whether or not she was responsible.