So glad to hear the good news. The great thing about young animals (including the human ones) is that they can bounce back amazingly well and she seems to be doing that.
If it was me, once the red mist had recessed, I'd be wanting him to learn how to control his dog, so I'd be wanting them to go to dog training - and probably be wanting all the family to go as it's so easy for one family member to undermine another's good work. And I think I'd want this dog to always be on a lead, and possibly be muzzled as well when out in public. Some humilitation for it's owner would be good as well. I wonder if one of your local newspapers can run a suitable story? Something along the lines of 'wonder kitten survives dog attack' with a really cute photo of Nessa, plus information on how important it is that *all* dogs are properly trained and well-controlled.
This bad for the dog as well - a well-socialised, well-controlled dog is a happy dog. Dogs like to know their place and if we make it clear what that is (below us, the cats and any other family pets) that makes them happy. I guess some males get rather uppity, if so a quick snip might be approriate for them as well.
If he asked me if I wanted the dog put down I hope I'd have the presence of mind to point out the dog isn't at fault, he is.
Again, best wishes for a good outcome for Nessa, including her shunt.