User blog comment:UFO Editor/Season 7 spoiler thread/@comment-1586735-20110318173141/@comment-5066566-20110318174039

Or you can slightly twist that and make Paul Beth's father and that's why she hates Paul (he abandoned her with a baby) so she never really wanted to avenge Martha (cos she hated her, and I don't see why she got so desperate to catch Paul out), just punish Paul, but that's unlikely because they seemed to not know each other when she moved onto the Lane.