IMO, I think it's very clear that someone important to her committed suicide. I just can't imagine TPTB putting that angle in if that wasn't the case. Not to mention that we definitely saw spoilers indicating something like this happening with Riley. I really like her character and I think that the angle was developed very tastefully. Just like it's unfair to judge a depressed or suicidal person for their ailment, I think it's equally unfair to judge Riley as 'just an idiot.' You said that people wrongfully assume that those with forms of depression "should just pick themselves up and go on" and I feel like the same type of expectations are being set for Riley in this case. Clearly, someone close to her committed suicide and the event had a traumatic effect on her and impacted her perspective greatly. Her comment about suicide as selfish is, IMO, less the result of her "being an idiot" and more the result of her judgment being clouded by grief, which I think is quite understandable. For all we know, someone she loves could have committed suicide in the last week. Traumatic experience impact people's judgment and attitudes, making them say and do things that they wouldn't otherwise do. I really think people should cut Riley some slack on this one.