Resonates, especially if you have a problematic mother
I loved this film from when I first saw it in theaters about a year or so ago, and recently re-watched it. I really think people who have problematic relationships with their mothers will understand and identify with the film much more than others. Granted, my mother is not exactly as much of a personality as Violet, but there are a lot of parallels between Barb and Violet's relationship that I saw in my own relationship with my mother.
The conclusion is especially hard-hitting with Barb leaving her there alone—there have been moments in my life where I've had to completely detach myself from my mother as well, and as painful and sad as that is, sometimes it's necessary. I think anybody who has had a troubled relationship with their parent(s), specifically with their mother, understand this film on an entirely different level; how the selfishness, the substance abuse, and the fundamentally broken spirit of a person can lead them to drive away even their own children.