why is she in my house manhwa

Could be that there's some sort of connection or misunderstanding. Maybe she needed a place to stay or was looking for someone and ended up there by accident.

Maybe she has a legitimate reason, like needing a place to stay temporarily.

Could be that the person was looking for someone or something at your house. Maybe they got lost or had wrong information.

The reason could be anything from a romantic encounter to a quest for a hidden treasure. Maybe it was a chance encounter that sparked a series of unexpected events in the story of the manhwa.

Maybe it's because of a curse or some kind of fate. That's a common trope in such stories.

It could be that the duke had something she needed or that she was sent on a mission to interact with him. Maybe it was to uncover a secret or gain important information.

Maybe the author needs a break to come up with fresh ideas. Sometimes creators need time to recharge their creativity.

Maybe it's just the way the character is written to create certain plot developments or conflicts.

The reason could be anything from a romantic encounter gone wrong to a mystery that needs solving. Maybe it's part of a larger conspiracy or just a random act that leads to unexpected developments in the story.

Maybe your friend practiced a lot and learned new techniques.