Black Magic

sir, i'm facing a problem which appeared in my life 4-5 yrs ago. there was an aunt of mine who i used to visit often, because she's been very nice to me from my childhood and her son, more than just a cousin, used to be my best friend. she always saw great potential in me and used to say that one day, i'll get a great job, as mostly everyone in family thought i was a bright person. then these years came, we moved to our hometown, despite aunt's pleas, from a metro city in which i spent first 14 yrs of my life. when we did, my life became a nightmare. i never failed a class before, but here i failed three times! i lost all friends, class teacher thought my failure can be a bad influence on other students, so she made me sit 2-3 rows behind all students, alone. seeing this nightmare had come to a standstill, i became paranoid and insane. my parents started to hate me and had put me on heavy medication. one night my father became so angry, he tried to throw me out of house. i learnt from some people that there's a sage who lives in a temple at the outskirts of town, i visited him. after looking at me for a short time, he told that i've been hit by black magic. everything started to become clear, as she was the only one who was against our shifting to hometown. Also, that same aunt used to talk about these kind of people(tantriks), plus whenever i came from her home, i felt more angry and irritated and she has some of my pictures, which she could be using. sir, now that i know its her who disrupted my life, what can i do to return her favour?