Did he have any friends or family to support him and help him through his depression?
When he was in “transition” he had a support network. (It was quite something to see the support group. Yikes.) Coworkers were also very good. A while after the surgery he/she transferred to another facility in another state, presumably to start a new life. That’s where he/she committed suicide.
I suspect that no matter what happened, he was never happy.