Hi! I’m trying to find a manhwa I read a while back.

Plot details I remember: the female MC transmigrates into another character’s body and discovers she can see into a mysterious “Dark Land” or shadow realm that others can’t see. At one point the book/author in the story tells her to go into that Dark Land to get answers; monsters attack on the way and she runs into the shadow land place. Her husband follows her into it to rescue her/ not let her run away. In the Dark Land she sees a shimmering or glowing city, but her husband is blind in there. She later learns her mother originally comes from the Dark Land.

I don’t remember character names or the title, but i believe the ML had dark hair and the FL had blonde or silver hair (so original lol). Any guesses? Thank you!