Having reflected on this, I'm now of two minds on this game. Spoilers for entire game.
On the one hand, I still love this game for its strengths. The music choice is great, the art is beautiful, the mood and atmosphere are pulled off wonderfully, and I love the way Angela uses metaphors and a kind of surreal approach to tell her story -- flowers blooming in a subway car, a bed hovering miles over the earth, standing by a conveyor belt next to a line of people wearing packing boxes for heads, etc.
The problem is how it handles suicide. More to the point, how I fear it may trigger certain near-suicidal or suicidal people into hurting themselves.
Firstly, what feels like the "good ending" is to "Join" the person who has passed on. This is portrayed as a cute and ending, with soft piano music and two cute ghosts holding hands, united as they ascend into the sky. This is also the only ending that concludes the story, and isn't just the character living for one more day. Which is an accurate portrayal of what it feels like to have hit rock bottom, but isn't very enocuraging to people who are actually there.
I know 13 Reasons Why likely has caused suicides, judging by a sharp spike in suicides, suicide attempts, and Google searches for suicide methods following its airing, and this is a kind of reminder of how media portraying suicide can affect people.
Secondly, because of the triggering nature of the theme, a game portraying topics such as suicide should have a note with resources you can contact if you are affected by the game. You Left Me lacks this, even though it to its credit has a warning upfront here on the game page that it explicitly handles suicide.
Because of this, I'm not sure if I can recommend this game, especially to people who struggle with mental illness themselves.