Psychics and mediums, should I be trying to heal my mom?

I cannot tell if she is a demon, demon possessed, or simply an extremely negative person. She has wreaked havoc in my life and destroyed just about all happiness for me, and her "negativity and evil" seems to be contagious - i remember whenever i lived w/her several years ago I was so egotistical and vain it was rediculous. Anyways, i sort of feel like it is my job to heal her and turn her back to the light before she dies maybe. Should I? I am afraid of being "contaminated" by her evil if i try to heal her, but i think I may be able to. I had tried total excommunication of her to avoid be "tainted with evil", but that seems to be failing as I am daily faced with demons, i mean real demons, that try to undo my mind and will. Should I attempt to heal her or should I stay away for now? Thanks in advance : )