Why does whitfield not reveal his sin to anse?

Answer 1

Because it was no use when she was already dead

Answer 2

Whitfield does not reveal his sin to Anse because it would cause further damage to his reputation and his family. He may also be trying to avoid the guilt and shame that would come with confessing his wrongdoings. Additionally, Whitfield likely feels that keeping his sin hidden is the easiest way to maintain his current standing in the community.