Boro, let's play the same example with 8.
A) If only Mira dies, then after another night phase, we're down to 6. One day later, 4, and that's the last day. Including the lynch on the last day, the village had 3 lynches, the wolves 2 kills.
B) If Mira and someone else dies, we're down to 5 instead of 6, and one day later 3 instead of 4. This time, the village had 4 lynches and the wolves 2 kills.
In case of your 7, you gain a day phase. In case of my 8, you gain a
night phase (when the village is down to 4, the wolves need to theoretically excercise their following night kill before they win).
In the case of 7, you postpone a lynch, in the case of 8, you lose one. (The same holds for all even and odd numbers, of course, and since we don't know what ranger and hunter will do, we don't know in which case we ourselves are.)