"We have AI therapists, most of the time it helps but sometimes it convinces the patients to kill themselves instead. Is the AI good or evil? Should it be allow

"We have AI therapists, most of the time it helps but sometimes it convinces the patients to kill themselves instead. Is the AI good or evil? Should it be allowed to continue to exist knowing it will inevitably kill again?" Sounds more like the plot line of a 60s sci-fi novel or old Star Trek episode. What would the prime directive say? Haha