Sarah is shown to be much more frisky and lowkey than Tom, which leads to strains on their relationship - such as when he refused to "lighten up" and have a "little extra wine" on their anniversary due to his prison rape phobia: "A Date With The Health Inspector".
While it seems that Sarah has extremely little to no respect for Tom and seems to "regret" marrying him, she does in fact love him. This was seen when she was worried when he was nearly attacked by prisoners. She "dominates" the marria