I don’t believe she is guilty, if she is she must be the world’s greatest actor, to fool her husband and her mother, why would she fight for years to bring the killer to justice, she could have just laid low.
Her mother seemed to be a good citizen, and much as we all love our children, I cant see her going along with this farce until she died, or FM husband either.
I don’t see how she had time to conceal him so well, that he was never found in the initial search, I’m sure all culverts were searched in the first days.