Dee,
My neighbor across the street had an eight foot high privacy fence installed, a sturdy wooden one so his neighbor next door to him can't see through it, or over it. The man was behaving similar to that nut next to your friend Nancy. It sounds like Nancy may be getting the help she needs. Tell her to remain cautious however, these people can be dangerous and vindictive and generally don't go away peacefully...
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Take a peek at my BLOG:

http://charleen-micheles.blogspot.com/