I'm glad they haven't undermined the severity of what Cayena went through in her past life. I feel like a lot of stories sometimes make it look so easy to overcome traumatic incidents, especially those of an abusive nature. She was forced to live with a man who abused her physically and mentally. She had no one to turn to, and then he even killed her, most likely in a violent way. Even though it hasn't happened in this life and she's working to prevent that path, those memories have been ingrained in her. Her body and mind are literally conditioned to react this way to him because of all the abuse.
I do hope that they portray her recovery as her own efforts though, rather than the ML sweeping in and "fixing" her.