Horror-Comedy (not the opposite) directed by Zelda Willians in her full feature film, and written by Diablo Cody (Juno, Jennifer's Body) that tells the story of a grief stricken teenager who had her mother slaughtered, and lives now with an abusive mother-in-law and a lovely sister-in-law.
Kathryn Newton as Lisa is perfect for her role.
Stigmatized by her past and actions the is the black swan of the school, and passes a lot of time in a old cemetery (watch the credits animation closely) of the 19th century on a tomb of another teenager that died with a green lighting into 1837.
The movie emulates the 80's teenage romance-comedies (it passes in 89), in a light way till a certain previsible point - for sure it isn't as sugary as you may think to those who wonder. And have an unsuspected ending.
I think it was worth for some laughs on a weekend night - I score it 6,6 out of 10,0 / B for the fun.