Should a past mental health episode mean this mom loses her child?

At ProPublica, the story of a young woman who had a mental health crisis — a psychotic episode — and as a result, lost custody of her infant daughter. In the crisis incident, the mom became delusional and believed her child had been raped. The child had not been assaulted, nor was she ever harmed by her mom. Four years later, the mom is receiving effective treatment for her postpartum depression and psychosis, and capably raising a son. Yet, the courts in Kansas still won’t give back her daughter, arguing she is unfit based an principle sometimes called “predictive neglect.” Is this right?