I just discovered I like tormenting my neighbour

Well not really tormenting but.....well I'll explain.

I have a rather odd neighbour. She bought her flat and is now trying to sell it. It's been on the market for a long time (well before lockdown) and no one is interested.

Now it could be explained by the price. For the same or even less money you could buy something bigger, freehold and with off street parking.

But she seems to blame us. She chose to buy a leasehold council flat years before we moved here. We're council tenants and she seems to think that having council tenants next door is putting people off. We're very well behaved....not the DM chavy version. I'm a bit dim when it comes to people being nasty. I tend to either miss it or excuse it. I was a bit surprised when she stopped talking to us just after the council put our new bathroom in but at first I just thought she was busy, not well, distracted by something in her life. But it's become a bit daft now. Recently she shouted at me for putting a pot of tulips near 'her' tree (communal garden). I don't like upsetting people and it is a shared area so I moved the pot. I should add that when we moved there was a weedy, messy area that a previous tenant had, at some point, tried to plant up so I just tidied it up and added a few bits and bobs. Nobody complained because most people like to see a few flowers and anyway it was better than the mess it was. Later she complained/shouted at me because I put the tulips near the birdbath so I put them elsewhere.

I finally cracked the other day and accepted that she was indeed trying to ignore me when she wasn't shouting at me. So I decided to wind her up. I know I shouldn't be I can't stop myself. I decided the best way to wind her up was to pretend that I didn't know I was being ignored. You see she makes it rather obvious by looking away and even crossing the road. So now when I see her I say 'Hi *. Y'all right?'. This puts her in an awkward position. Does she carry on ignoring me now that I've greeted day or does her Englishness force her to be polite and reply? Oh the pain on her face when she says 'Hello' in reply.