Background: Seung-Hui Cho (in Korean, properly Cho Seung-Hui; January 18, 1984 - April 16, 2007) was a US resident of South Korean origin, a spree killer and mass murderer who killed 32 people and wounded 17 others armed with two semi-automatic pistols on April 16, 2007, at the Virginia Polytechnic Institute and State University in Blacksburg, Virginia. An additional six people were injured jumping from windows to escape. He was a senior-level undergraduate student at the university. The shooting rampage came to be known as the Virginia Tech shooting.
Context: Immediately after the incident, reports carried speculation by Cho's family members in South Korea that he was autistic. However, no known record exists of Cho ever being diagnosed with autism, nor could an autism diagnosis be verified with Cho's parents. The Virginia Tech Review Panel report dismissed an autism diagnosis and experts later doubted the autism claim.  More than four months after the attack, The Wall Street Journal reported on August 20, 2007, that Cho had been diagnosed with selective mutism. The Virginia Tech Review Panel report, also released in August 2007, placed this diagnosis in the spring of Cho's eighth-grade year, and his parents sought treatment for him through medication and therapy. In high school, Cho was placed in special education under the 'emotional disturbance' classification. He was excused from oral presentations and participation in class conversation and received 50 minutes a month of speech therapy. He continued receiving mental health therapy as well until his junior year, when Cho rejected further therapy.  To address his problems, Cho's parents also took him to church. According to a pastor at the Centreville Korean Presbyterian Church, Cho was a smart student who understood the Bible, but he was concerned about Cho's difficulty in speaking to people. The pastor added that, until he saw the video that Cho sent to NBC News, he never heard him say a complete sentence. The pastor also recalled that he told Cho's mother that he speculated Cho was autistic and he asked her to take him to a hospital, but she declined.  Forbidden by federal law to disclose (without Cho's permission) any record of disability or treatment, Westfield officials disclosed none of Cho's speech and anxiety-related problems to Virginia Tech.
Question: Why was Cho diagnosed with selective mutism?
Answer: 

Background: Miranda was born Maria do Carmo Miranda da Cunha in Varzea da Ovelha e Aliviada, a village in the northern Portuguese municipality of Marco de Canaveses. She was the second daughter of Jose Maria Pinto da Cunha (17 February 1887 - 21 June 1938) and Maria Emilia Miranda (10 March 1886, Rio de Janeiro - 9 November 1971). In 1909, when Miranda was ten months old, her father emigrated to Brazil and settled in Rio de Janeiro, where he opened a barber shop.
Context: Although Miranda's U.S. popularity continued to increase, she began to lose favor with some Brazilians. On 10 July 1940, she returned to Brazil and was welcomed by cheering fans. Soon after her arrival, however, the Brazilian press began criticizing Miranda for accommodating American commercialism and projecting a negative image of Brazil. Members of the upper class felt that her image was "too black", and she was criticized in a Brazilian newspaper for "singing bad-taste black sambas". Other Brazilians criticized Miranda for playing a stereotypical "Latina bimbo" in her first interview after her arrival in the U.S. In the New York World-Telegram interview, she played up her then-limited knowledge of English language: "I say money, money, money. I say twenty words in English. I say money, money, money and I say hot dog!"  On 15 July, Miranda appeared in a charity concert organized by Brazilian First Lady Darci Vargas and attended by members of Brazil's high society. She greeted the audience in English, and was met with silence. When Miranda began singing "The South American Way", a song from one of her club acts, the audience began to boo her. Although she tried to finish her act, she gave up and left the stage when the audience continued to boo. The incident deeply hurt Miranda, who wept in her dressing room. The following day, the Brazilian press criticized her as "too Americanized".  Weeks later, Miranda responded to the criticism with the Portuguese song "Disseram que Voltei Americanizada" ("They Say I've Come Back Americanized"). Another song, "Bananas Is My Business", was based on a line from one of her films and directly addressed her image. Upset by the criticism, Miranda did not return to Brazil for fourteen years.  Her films were scrutinized by Latin American audiences for characterizing Central and South America in a culturally-homogenous way. When Miranda's films reached Central and South American theaters, they were perceived as depicting Latin American cultures through the lens of American preconceptions. Some Latin Americans felt that their cultures were misrepresented, and felt that someone from their own region was misrepresenting them. Down Argentine Way was criticized, with Argentines saying that it failed to depict Argentine culture. Its lyrics were allegedly replete with non-Argentine themes, and its sets were a fusion of Mexican, Cuban, and Brazilian culture. The film was later banned in Argentina for "wrongfully portraying life in Buenos Aires". Similar sentiments were voiced in Cuba after the debut of Miranda's Weekend in Havana (1941), with Cuban audiences offended by Miranda's portrayal of a Cuban woman. Reviewers noted that an import from Rio could not accurately portray a woman from Havana, and Miranda did not "dance anything Cuban". Her performances were arguably hybrids of Brazilian and other Latin cultures. Critics said that Miranda's other films misrepresented Latin locales, assuming that Brazilian culture was a representation of Latin America.
Question: what did she do afterwards
Answer: