The flame queen - Fairy Tail Fan fiction ( A Natsu Love Story)

Bad at description's a warning: A girl named Karin who is another dragon slayer, and has a terrible past that haunts her. As she was on her journey to find her dragon and lost older sister she finds herself at the fairy tail guild. Who is this other dragon slayer? what is the past that haunts her so much she can't even sleep at night? Who will she meet? Who is her lost older sister? And what will happen when she and another hot head dragon slayer start to have feelings for each other?