Of course there is still the guilt. I don't think that will ever go away. And it doesn't get easier. But I've made my decision and I have to live with that guilt, it's just part of it. Penance I guess for everything else being so good here.
I've made friends. Have a good social life. I'm not sure yet if they are "real" friends or "mummy" friends, only time will tell. But at least I know people, I'm getting out and about, I'm enjoying myself, and I know there's people I can call on if I need to. We live in a fantastic area, you will have a great education in the local schools, and you'll have all the benefits of living in a village whilst also being so close to the city.
Our house is beyond my wildest dreams (nothing fancy or over the top, just more than I could have ever hoped for), the plans we have for renovations will make it even better. And unless we fall on hard times it looks like you are going to have a pretty privileged childhood being here. Materially, culturally, socially, environmentally - being here is everything I could hope for and more, for my daughter.
I know you are British, but as you were so young when we left you will never truly be British. Your home is here now. I know if we went back now you would adjust quickly and never remember being here at all, but I think being a Kiwi kid suits you! Even if you will lose your English accent fairly soon!