what are the details of Dr. Gordon's medical treatement for esther?

Dr. Gordon advises shock treatments for Esther, who begins to think more and more often about suicide.

The hospital where Esther receives shock treatments is an alien place for Esther; the people there seem counterfeit and inanimate. Esther loathes the shock treatment, and tells her mother that she will not see Dr. Gordon and will not go back for treatment.