99-kai Danzaisareta Loop Reijou desu ga Konse wa "Chouzetsu Aisare Mode" desutte!? - Shin no Chikara ni Mezamete Hajimaru 100-kaime no Jinsei

From J-Novel Club: Falsely accused of plotting to assassinate the Saint, Lady Alphina finds her engagement to the frigid prince called off and her head under the guillotine. Time rewinds upon her death, but despite all efforts to stave off her fate, she faces the same end 99 times over. Just when all hope seems lost, she awakens a new power during her 100th loop. She can now hear the thoughts of those around her, and it turns out her accusers were a lot more enamored of her than she thought! Can she use this newfound ability to turn her fortunes around? The 100th time's the charm!