Melinda told Jim/Sam he is Jim and Jim/Sam tells Melinda that he thinks she needs help. Melinda finally gives up and painfully tells him to leave, thinking that no matter how hard she tries, Jim will never be back.
Jim/Sam was informed by Melinda that he is Jim, and Melinda eventually concluded she required help. Melinda then told Jim/Sam to leave, assuming his absence would persist despite her efforts.