Nitpicky Karen neighbors are as prevalent as they are pesky; they derive pleasure in being as disagreeable as possible. In this case, OP moved into their late grandfather's house, which needed some upkeep to maintain its good looks and nice lawn. OP's neighbor was using OP's backyard as her ‘virtual’ backyard. This neighbor also happened to be a pesky Karen who always seemed to have something to say and never was that something pleasant. After a while, OP became sick due to stress at work and d…