I'm sorry you had that experience ;u; May I ask the same question the others asked below, about upgrading stats and gear? It should in theory make you OP enough to fight Kaly somewhat comfortably on Easy mode, Lily is a bit of a pain no matter what but she's also beatable 😅
Sorry for taking so long to answer, but if you send me more details I might be able to help! Hope you have some fun with the game next time ;u;