Searching for manga

So I remember reading a manga forgot the title but it's the name of a flower
Where this girl moves back with her family to the country
Gets bullied eventually kids burn her house as a prank but things go wrong
Both her parents die while protecting her little sister
Her sister is badly burnt and critical
So she decides to avenge them

-Spoiler here-
She kills hem all or karma gets them
And the one classmate she thought was decent, took pictures of her sister while being burnt
And I don't remember if she's alive at the end or not