Story murder ideas?
So, I have to write this mystery story for my language class, and I can't come up with an idea for the murder in it. There character is really simple, she's a girl, really pretty, gets good grades, lives a normal life. Then for some reason her parents are murdered, but she isn't, instead she's held captive for like 23 days until she escapes. Can anyone give me a good reason on why anyone would want to murder her family, then kidnap her?
Please, please, please help! <3 <3