The Dark Shadow

After waking up on beside some homes a girl with no memories begans her new life. Her new parents give her a name and she grows. The only problem is she has these strange markings and have these power outburst. When she turns 17 she has another power outburst which is bigger then all of the others. She shrugges it off to nothing had happen but it did. In another relm a boy who family protect magical beings is pulled through the portal she open and is thrown to earth. There he fells the power and goes and searches for it. What he finds shocks him. Will the girl remember who she is before a evil wizard has her in his clutches and cant the boy find her before she kills people and herself?