My new neighbour, I'll call her Doreen, has severely pruned the trees and hedge in our shared back garden without discussing it with me. It's a brutal, badly done job and now, as well as a once pretty little garden looking awful, the houses behind have direct view into my bedroom. And the birds have gone 
Obviously I'm not going to swear at her but WIBU to tell her not to do anything else to the garden without me agreeing to it first? She's also just got a 'dusk to dawn' bloody bright light attached to the front of her flat (we're both ground floor in a block of 4 HA flats) despite me asking if she'd get a motion sensor one. We live in a dark skies area and it's pretty much impossible to see the stars with this beaming all night. She seems determined to do what she wants and I don't know how best to deal with it whilst keeping a good neighbourly relationship.