Well, some of you may know Elyah, some may not. In overall, she is a Hufflepuff First year, Halfblood.
Her mother is a Muggle, who doesn't know anything about Wizards and the whole Wizarding world, making her life very very difficult, since she is never there for Elyah. Nor had she been there her whole life. At least not as much as she should of been.
She never met her father, since her mother never talked about him. Neither does she know his is a Pureblood wizard. Now what I have in mind, is if her father comes along and finds her but he doesn't say they are related. So, when he sees she is feeling terrible and that she is practically alone, he reveals the secret and takes her away from her mother to grow in a healthy family of some sorts. That way she grows closer to her father.
Now, I need someone to be her father?
OR
Another case scenario, she is adopted by wizards. Her mother would gladly give her to them.