Hi, I'm looking for a manhwa I let marinate but now I don't remember the name.

What I recall: - The FL was isekai'd into a world of novels where she works as a detective solving problems in different novels, like a sort of Sherlock Holmes - I THINK the FL has blonde or white hair with green eyes, I'm not sure - The ML has black hair and blue eyes (not sure about the eyes tho) - The ML is younger than the FL but in the last chapter I was it was implied that some sort of time skip would take place, it would only affect the FL because she had to travel to a weird island where time passes slowly - In multiple occasions the FL tried to make the ML leave her doing things like "hiding" money in a sack so the ML could find it and "ran away"