Karen's Syphilis
Not every gift Karen gets is the happy kind.
Bror foists a horrific case of syphilis on her, forcing her back to Denmark to deal with a therapy that sounds like something out of the Inquisition's playbook. This, we all find out as the movie continues, isn't the first time she ends up paying for someone else's mistakes.
It's a tough break, but it also shows us how strong she is, and how easily she absorbs the kinds of blows that would mentally cripple the rest of us. Painful cure? Bring it on. Can't have kids? Open a school. This is a woman who doesn't know the meaning of the word quit, and when life throws her lemons, she's gonna turn it into the best-tasting lemonade she can.