The fact this lady has a second home and therefor may have emotional ties in another place let me to say what I shared.
This kind of harrassment must make her life full of anxiety.

A dear old lady (former matron of a mental hospital) moved from next door to me to a home in the city suburbs.Next to a childrens park..At night the older kids gathered on the swings etc. They threw the dog poo bags over the wall.Opened gates..threw bottles that broke etc.Her son did everything.Through police and politics.Nothing worked.I went on one visit and she had up to fifty of these bags gathered in her bin.This saddened me.She was in her nineties a clever woman who had done so much for society.That she should have to tolerate this was criminal.She moved to a safer more secure flat...loved there until 100 years of age.Only moving to care after a hospital stay.
We return to our homes and care and are concerned.The person has to sleep and live in that house never knowing what a day will bring.
Mountain ash