In episode 4.17 ("Like Water for Murder") an awkward moment between them causes her to leave a piece of evidence unattended. The investigator accrediting the lab notices this, and brings it to Mac's attention. Mac has words with Lindsay, and she verbalizes regret at having entered into a relationship with a coworker. In episode 4.19 ("Personal Foul") Danny calls her to apologize for pushing her away and he suggests that she come to his apartment. However, she merely says that she has to go, and hangs up the telephone.