Cooper only ever wants to help people. He is perhaps the most compassionate doctor on the show. In "...To Change the Things I Can," he faces a very tough decision. Should he help a father end his daughter's life, when she doesn't have much of a life left? This is a moral quandary, similar to other episodes of the series, but different because a child is involved. There is no right or wrong answer when it comes to end of the life decisions, which are usually left up to the family. This one is a little confusing because the option is not given to end the child's life, though she is a vegetable. But Cooper handles the father with grace and care, in a way few people could.
Charlotte has come full circle with the admission of a patient who has been abused and raped, but will not allow a rape test. It is no surprise that Charlotte relives old feelings, having only recently begun to recover herself from a similar ordeal. Charlotte is a very dynamic character, who has experienced a lot of growth over the course of the series. It is a logical step for her to have to face those demons again, and thankfully she comes through with flying colors. Charlotte is able to offer comfort and connect with the patient without totally tossing aside her personality, which prevents too much bonding. Kudos to a nice capper on a very good story arc.
Private Practice will return for a fifth season next fall on ABC.