冤罪で処刑され、ループする令嬢 生き方をかえてもダメ、婚約者をかえてもダメ。さすがにもう死にたくはないんですけど

Leticia, the daughter of a count, was accused of an unfounded crime and executed due to her sister-in-law's plan.However, when she woke up, she had returned to when she was 13 years old...!?Leticia is determined to live a better life than the last time, but for some reason, no matter how many times she repeats herself, she cannot live until her 20th birthday...!?