Resetting Lady is a Manga/Manhwa/Manhua in english language, Drama series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

I got into a novel. If I can find my true love, I will have a happy ending But when it came to the end, I accepted death. After opening my eyes again, I was back to the starting point. I fell in love once more. But in the end, death still greeted me. Poisoned, suffocated, died from a fall, crushed, starved,… On my 117th birthday, Karen Hier – I decided to be a killer.