It's wrong to abandon a depressed friend.
Elaine is at her friend Sally's, who has been very sad and mentioned harming herself, but Elaine is supposed to meet her boyfriend in a few minutes.
Elaine wants to react to Sally's feelings.
Elaine calls her boyfriend to say that Sally really needs her right now, and she stays and talks with her through the night.
Elaine tells Sally that she has plans with her boyfriend, but to not do anything stupid.
Sally feels much better that Elaine took the time to work through her issues.
Sally feels very alone and then decides to attempt suicide.