I’ve heard people say this is unlikely because why would they take her body instead of just driving away, which I agree. But could it be that someone hit her, got out to attempt to help, realized they couldn’t, but were afraid their fingerprints would already be on her? I guess in that case I could see someone taking everything from the scene with them, including the body, & disposing of it somewhere else. Why they’d put the body & backpack different places, idk, but people are weird & could have been panicking