1/ Winstone would not have been married to Swinton in the first place (they seem incompatible) 2/ the daughter seems complicit in all of it, and too old to have just accepted it without complaint, without doing something and/or saying something about what her father was up to 3/ why would a London family have moved out to this windswept cottage in Devon to begin with? 4/ why would neither child have reported this ridiculous abuse to the mother and/or the police? they're certainly old enough to be taken seriously 5/ the whole thing requires a suspension of disbelief and with a story this grim and ludicrous, why bother?
Review of The War Zone
