THIS IS MY THEORY!
i'm team manuscript and i truly believe that verity is evil. I believe she loved her husband more than she loved her children. I also believe she let Harper drown. I don't think Jeremy is innocent tho. I think he found her manuscript and attempted to murder her but since she survived, he just accepted the fate. I believe what led him to killing her in the end was the fact that she was faking her illnesses this whole time and he was just fed up. As for Lowen, i think her and Jeremy could live a better life as long as she doesn't repeat the same mistakes as verity.