Murdered bonded

Don’t mind voice or name i made this to help with my book im writing im putting the same stuff on here so when i get stuck is helps with the next line anyways Start: The book is about a girl whose mother was killed when she was 6 Her father started trying day and night trying to find her murderer she received training to kill him or something when she came of age. Middle: she later goes against her mother’s murders son. they were both under cover watching each other unknowingly. Second middle: They had to fake date each other thinking the other doesn’t know. They eventually fall for each other Please give me advice or ideas ps this is smut later i believe Sry for the bad opening it didn’t let me put the whole thing so i shorted it