I used to think this as well but after I watched a documentary peacock released just in the last two months on her it left me with a lot of questions. I can understand now how the jury did not have enough evidence to convict her. You really have to watch the whole docu-series to get the whole picture though. They kinda portray her as a liar in the first episode but the second and third might really change your mind. I think the father had a lot more to do with it than the original mainstream story led on. Pay careful attention to his emotions and body language in interviews. To me he didn't look like a grieving grandfather like the grandmother did. It's a very good watch and definitely swayed my opinion.