Damasare Uragirare Shokei Sareta Watashi ga... Dare wo Shinjirareru Toiu no deshou?

Sherry, the daughter of the Duke, was deceived, betrayed, and executed by her beloved family and crown prince. When I noticed, the time had returned and I was 6 years old. Despite refusing contact with the outside world to avoid ruin, she was made a fiancée of the crown prince before she knew it?! She met a beautiful parent-child adventurer who foresaw the ruin.