It's not sad. It is unfortunate these things have to happen to an "innocent" child, but what do you expect when you are an able-bodied ratbag mother who behaves terribly, refuses to stop swearing/abusing and harrassing/dressing inappropriately to get a proper job and who demonstrates and encourages bad behaviour in her child (a 6 year old twerking, spitting on cars and property, or annoying customers for money for ice cream is not normal childhood adventures).
One thumbs up - it is actually a well-done film, but it makes me angry and angry at myself because it induces thoughts akin to those of a stereotypical conservative old white male. But I guess a film that challenges you or stirs up emotion is good in that it is affecting.