Two years ago, on the coldest day of the year, my pipes froze like many other peoples pipes in the city. The result was that when I turned on my washing machine that day, it dropped down into her house instead of out of the outside pipe. She was livid about it, shouted, slammed a door in my face etc. I apologised but obviously I hadn't meant it.
I explained the issue and her insurance covered it but we didn't speak for a year. She then left a series of notes through my door like 'your washing machine is shaking and its shaking my pictures on the walls, you NEED to fix this.' Finally I got a new washing machine and thought that would be that.
Today, she knocks on the door and tells me she thinks I have a plumbing problem and to 'come outside with me.' I did this and she said 'I noticed a small amount of water coming from the pipe on the outside wall, I think you have a boiler issue.' She then asked me into her home, pointed to the OLD stain from the washing machine on the ceiling and said 'hmm I worry this stain is actually from your boiler not the washing machine.' I assured her it was the old stain as my boiler's placement was nowhere near enough making this possible.
I love my flat but I am beginning to hate living here five years in. She's retired and seems to always be on the lookout for issues. She's forever leaving sticking notes on doors moaning to various people. On top of this, my dad used to work with her and said she was universally disliked for her attitude.
Now I feel I'm always placating her/waiting for that knock at the door. I feel like telling her to just fuck off. Am I unreasonable here? How would you deal with her?