What would you do if someone from your child hood kept stalking you online?

I have this very toxic person from my child hood. We were friends for a very long time but I cut her off when she became very toxic.

I mean like she was trying to drag me down to her level and make my life a misery. Even once said her own mother was dead when she was still very much alive.

She keeps sending friend requests on Facebook under different names and accounts all together. Even as a male sometimes. It's become increasingly annoying and worrying. I have reported her to Facebook multiple times and even told her to leave me alone or else. But she just doesn't get the message.

Any advice for me here? I just don't know how else to get this person to get the message I don't want her in my life at all as shes even hassled my teenage brother and entire family.