What I hate the most about this is that Erna was depicted as your usual sweet kind girl, taught by her grandmother who lived other times, and raised up with good manners and character.
So she turned out to be too sensitive for this harsh world.
If I put myself in her shoes, finding out your hubby could be the biggest fake ever, knowing what society has to say, knowing how harsh was the beginning and continuation of your relationship, I would be scared as hell.
So, divorce and go back to the countryside.
It is true but in the end it was her own personality who made her follow her grandma's orders. Also, I think she was supposed to never leave the countryside, so no man from the city was going to take her out.
Also, I think her father was also an issue.
I am not justifying, her grandmother took the responsibility of teaching her manners. Its true that she knows nothing of the outside world.
And also, I hope she changes somehow. I do not want her to stop being the way she is but I would love to see some shield in her personality.
I think she doesn't changed at all except the fact she accepted how society thinks of her whatever she does, people still criticize her and the impact of her miscarriage made her cautious. At some point, she become numb and depress, and then accepted bjorn again. She still hate going home to lechen, I do still hope she confronts gladys or the princess but she stayed docile and kind to them (like killing them with kindness) after the truth came out, people understand bjorn why he divorced gladys but some people haven't apologize what they said or did to erna which makes everything 'meh' cuz why they forgive the prince but not erna? Im glad the princess apologize tho.
Now were in this part of plot, I still can't help but feel pity for erna's situation and how helpless she was. She keeps entangled on some mess and there's pavel in the party which only meant to cause more issues and bjorn punching him doesn't resolve it but only confirm the rumor. Erna was so stressed and exhausted to the point she got miscarriage (I BLAME THE PRINCESS, GLADYS AND EVERYONE) and thought bjorn doesn't care, comfort and protect her shows how she's only right to leave and divorce him (but didn't happened)
Indeed "marriage is scary, and what if my husband turn to be like bjorn" girl I would kick his ass and drop him.