on night four i keep on getting killed by the same character the one with long red/ginger hair and i know how to get past most of the others but could ther be some kind of guide on what to do?

Which one?

Cindy or Crystal?

If it’s Crystal, close the vent and hold it until she goes away.

If it is Cindy, if you hear her wings flapping, go to the left door and close it.