We had something similar with our batshit neighbour
We'd lived here for a while,then our (lovely) neighbour died
Nutjob moved in and started up about us parking our car,outside our house in 'her' Street
When that failed to get a rise out of us,(she rang the police 3 times but they couldn't do anything as we where parked perfectly legally) she got 3 cats
Anyway,I adore lilies,roses,lavender,wild flowers etc and we'd planted loads and two trees in our garden-its our garden,we own the house and will plant what the hell we like
She came round and tried to demand we take all the plants/trees up and to get rid of our bird feeder while we where at it
We laughed and shut the door on her-our garden,our flowers,our trees and our bird feeder-her cats-not my problem (plus the other neighbourhood cats don't seem to have had any issues)
Well!that triggered batshit into space!
She tried to get us to pay vet bills that had naff all to do with our garden,slagged us off to anyone who would listen and tried to force us out of our own home ('I'm going to phone your landlord and get you out!'best of luck love,we are the bloody landlords)
Long story short,she accidentally set fire to her house last week and has moved out (the lack of insurance and the gofundme and begging for help on sm is another thread)
Good riddance to bad rubbish-the entitlement was off the scale