Before the accident, Beth was a happy and well-adjusted sweet young girl, though she had a problem with sharing. She and Kate were close and had their birthstones around their neck. After the accident, Beth was emotionally abused by the man who found her and the man's mother who treated Beth like a servant. She was made to live in fear and this fear and abuses likely twisted her mind into becoming a cold-blooded and violent killer that could easily be confused for a sociopath.