When the third robbery accomplice wakes up in the hospital, she takes off her oxygen tube, heart monitor, and IV. The moment her heart monitor stopped registering her beating heart, an alarm would have sounded, especially on a patient just coming out of surgery.
Lucy was told by multiple female police officers in the first season that she couldn't date John and that it would ruin her career,
even though he was the same rank and had no power over her advancement . They ended their relationship before they were ready. But now she's dating Tim, her superior with actual sway over the course of her career. Aaron is also a P2 while Celina is a rookie. And suddenly inter-cop relationships are only "frowned upon."