I’ve Probably Made a Mistake in Getting Married

Rocks

That's a bit naive... even for such genre

Another fragile, useless FL that ruins a perfectly good manhwa with her whining and overthinking of things. 

There's a phrase that summed it up for me:
She arrived at this place where she's done nothing but judge them, get scared about the dumbest things, make the worst assumptions about everyone, and act like some sort of hostage, don't speak unless she has to

Meanwhile, everyone has been nothing but nice to her, they feed her, talk to her, try to make her feel comfortable, cheer the ML to go get closer to his new bride, try their best to keep her happy... And her bitchy response is: what a miserable experience is to arrive at an unknown place where no one welcomes you, why do I have to live like this? I'm a precious person! 

Yeahhhhh.........
 Fu** fu** fu** no. 

I'm always amazed how there are manhwas like -I thought it's a common possession- where the main character Edith goes through he**, she IS not welcomed, hated, even attempted to murder her and she's still strong, extraordinary, and changing the world around her. While this FL that's being treated so nice does nothing but bi*** and cry about.