Cross Chara X OC

Kiana wasn't a normal girl, she was someone who had magic. She wouldn't use them unless it's an emergency but other than that, she keeps it a secret. Til one day, she ran from her abusive parents and climbed the mountain that held the legend "Whoever climbs the mountain never returns" She was exploring the mountains til she fell in a hole. Kiana woke up in a white void. She met Cross! Sans and Cross Chara and what happens next? Read the story to find out ;3