Too Sharp of a Thorn.

Rose grew up in a horrible household, leading her to take dark paths to cope. Rose was a slut, and promised herself she would never fall in love. But then she goes to a cafe to grab a coffee and meet up with her more civilised sister, Wither, but instead she falls in love with the barista that served them.
Robin grew up having a good life, despite the little money her and her parents had, but they coped. Robin found love and trust easy, until she met Rose.
Rose tried to teach Robin that you shouldn't love someone so easily, but Robin ignores her, and instead tries to teach Rose how love. Despite the thorns and jagged edges on Robins girlfriend, they find themselves coping in a relationship.

Until one day Rose gets home just a bit too late.

Just be warned, this story contains sensitive topics such as self harm and reference to suicide. It also contains abuse [including sexual, physical and mental] and cursing. This is your warning.