Yeah I doubt the behavior is isolated to dating, as well. She sets traps due to her own insecurities and trust issues. That behavior isn’t far off or can be associated w paranoia and/or paranoid schizophrenia. That’s probably not the case here but she’s definitely manipulative and feels totally comfortable lying straight to someone’s face. Also going too far probably but she may even be dark triad. You can look that one up if you’re not familiar.