If this is true, I would confront her 1st and find the truth before you let her know what I am about to tell you. The black arts and sorcery is of satanic work no matter how big or how small the evil works or intentions are towards one another. The devil will use people that will tread into very dark spiritual territories that do not know the true consequences of their actions. They should not tamper with the unknown. Hopefully she is not burning candles for summoning or having someone do it for her. She is not spiritual enough to know better otherwise she would not commit to these things. She should understand that people who tamper, will meet their punishment with God for interfering the lives and souls of others over trivial matters personal satisfaction, or for self gain. God can punish our body and the soul, we should fear him I am sure you will agree with me. She must stop these negative intentions toward you now by bowing down and praying and asking gods forgiveness. I pray that she will see the errors of her ways and never visit the dark spirits again if this is all true. If this is not true then we must pray that you shall see the truth and not through your friend that speaks of these evils. God Bless you Amen. Find out the facts.