Just thinking somewhat:
New Moon, Mercury Retrograde and moving up on Samhain. Destruction, miscommunication, and a New Year. Talk about an interesting conjunction of astral (used in this case as the original definition of “relating to space”) entities and times.
It would probably be a good time for magicks that separate yourself from situations and people you find that are not good for you. It is a time of endings in preparation for starting a new life, a new year.
Understand that normally before new growth can happen old things need to be destroyed and removed. Find yourself in a bad time with a lover or a family, take steps to destroy that situation and to begin another.
BUT, like anything magickally, there is a double edged sword here. With Mercury retrograde, you have to be EXTREMELY careful of the lines of communication. You MUST not be unclear. This is one of many reasons that magickians and pagans insist that you are very clear anytime you do magick and spiritual work as to what you want. This is not a time to get lazy. Be clear, and you can have what you want. Be unclear and you might find that you will be destroying old and important family ties.
But it would be perfect to remove that insane stalker from your life, just do a little magick and you should be able to force them to go away.