The vexing thing for me is this:
Nerwen became suspicious of me because of
Pitchwife, who in turn was watching me because of the interactions between
Boro and me.
Boro was basically hitting out at me not with any certainty that I was a wolf, but just to see how I'd react.
So I end up going down in the end because
Boro did a little preliminary 'feeling things out' the first Day. Just goes to show how small things can lead to big ones.