I'm only halfway through S01E03 but I have a question about accents (ETA: and consent). Not really spoiler-y but don't click if you don't watch.

Sarah mentions early on that she and her brother moved from the UK to Canada when she was about 12 years old (if I recall correctly). Their accents are still pretty heavy (which I get) but why is there so much British vocab? The occasional "bloody" I get but "drinks trolley" is pushing it, no? "wanking"? Did I miss something?

Bumped for ETA: WHY in the world is she continuing to sleep with Beth's husband? It's really off-putting how the show presents it as sexy when it is fraud (and you could make an argument that it's rape, as well).