Rest assured, you move the fence back 2 foot and she'll suddenly take her fence down and claim the extra 2 foot of garden!
Exactly! Yeah, right.
Despite the constant bad press the council are given, they're actually surprisingly helpful around my way. It could be worth just asking them what they would suggest about the potential boundary issue (I haven't seen the photos but attaching a fence to your property doesn't sound right). If they say something in your favour, you could get them to write it down and wave it at her, not necessarily because you're then going to try and enforce anything but as a way to get her to back down a bit. You know, be polite but also make her know that there are certain things you want in terms of privacy etc and that she can't have everything her way.
I agree, they've been really nice and very helpful when speaking to them thus far. I feel like I'm pestering them now though, over what's probably a very low priority trivial issue for them. I think you have to pay to get written responses from them, hence just talking on the phone for now. But if I have to get an email or letter from them I think I might have to. I'm sure she's reported me to planning enforcement, so maybe they'll come out and have a look. Again it feels like a waste of their time though, I'm sure there's much more important planning issues than this, but we need closure so she stops bothering us.