After reading this, it is giving me the chills. A friend of my niece's acted the same way for a few days when her and a group of friends were on some camping trip. She was different, but they couldn't put their finger on what exactly was different. She got very jumpy at normal outdoor sounds, like a twig breaking under someone's foot while walking, little critters walking around at night- sounds she was well used to from previous camping trips.
At first, they thought that maybe she was using drugs and combined with drinking, it was affecting her, but this behavior continued during the day when they were hiking and swimming. They were all so concerned, that they talked to her mother privately, were honest about them having some beers at night, but they told her something was different about her. Her Mom said it was upsetting to hear, as she had been acting erratic at home, but her husband and other children thought that the mother was just looking for something wrong with her. About a week later, she ended up at the hospital- she got so paranoid and scared, thought someone was after her. It turns out the poor girl is schizophrenic, and it came at her late teens.
Could this have happened to Lauren? Do her friends know if she was acting like this- like my niece's friend? The only reason why my niece and her friends talked to her mother was because they were worried she was going to hurt herself- she was crying, yelling sometimes, paranoid, trying to take off on them (luckily, they always found her and brought her back) because she thought they were all against her, just like she thought her mother was against her.
I hope her family and friends get answers soon. Poor Lauren- saying a prayer tonight that you're ok out there. If not, I hope you're found soon.