Oh gosh it sounds exhausting.
I haven’t got any advice I’m afraid, many years ago I had a similar neighbor, she had a heart of gold, but drove me completely round the bend.
One morning we woke up to deep, deep snow, I remarked that at least B wouldn’t be able to come around, when she appeared trudging down the garden in her husbands wellies, waving a pint of milk she had brought us.
I think sometimes I was a bit rude to her, but she never caught on, and to be fair, she would do anything for me, and on at least one occasion I don’t know what I would have done without her.
But, I know it’s wearing, I hid and didn’t answer the door at times, but she always caught up with me in the end.