she got on top of that big hill and didn't look around she didn't check to see if anyone was following her big mistake because if someone was she would have died there. The second one is that she heard her dad but just ignored it as a mistake or her brain playing tricks and she conformed that was her dads voice so she should have checked by yelling back her dads name to make sure it was not her brain playing tricks on her. She did not look for a phone when see clearly saw him take one, well you might say she might not be thinking well but she did when she was in the freezer now didn't she. she should have killed him would have made way more sense because now its more safe for her to yell her dads name because she would know thats not him trying to trick her.