Aaw, Nix you didn't need that coming back from your hols. Look at it this way, at least your home is being watched over whilst you're out. Imagine how fast she'd be on the phone to the cops if something seemed out of sorts.
I think everyone has a nosey neighbour that doesn't mind there own business. Our neighbour wanders around her property just about craning her neck to see what we're doing outside, which must be difficult considering these are all very large properties (absolutely massive by UK scale), lots of trees. The most amusing bit is using industrial grade powertools are rather noisy.