I do not believe there was a brother and sister type relationship re. Harry and Molly, Molly is probably aiming for a tv career, and can see the wood for the trees.
She's not vulnerable perhaps she's not as worldly as most. Harry has street smarts, considering he joined the army at 16. Probably knows how to make allegiances and win people over.
However producers most likely were whispering in contestants ears, producers are ruthless. The BBC probably working overtime at damage limitation because civilians are vulnerable imo.
Claudia Winklemans clothes probably make up half the winning pot, to the manor born.
God I cannot stand the nature and manipulation of ordinary civilians by tv companies. Its unethical. Still love it though