Receiving emails that i'm being searched for, and this person has threaten my life?

this madeline use to be my neighbor when i lived on maiden ln saint joseph mi, first duplex on right side, its been years now sence i lived there and my younget son was in kindergarden, now he is 21 and in NAVY, madeline was a women who worked as nurse and stold alot of drugs from her job, i called crime stoppers and she found out, she has followed me, said she would one day kill me, and i cant remember her last name to search for her, i need to find her befor its to late, i'm very serious and afraid, please help ? parene mckie 269-350-8218