For singer-songwriter Sia's performance of her 2014 single "Chandelier" at the 2015 Grammy Awards, Wiig danced alongside child dancer Maddie Ziegler. The dramedy "Welcome to Me" was released in selected theaters in May 2015, to a positive critical response; in it, Wiig played a multi-millionaire with borderline personality disorder who uses her newfound wealth to write and star in an autobiographical talk show. Rotten Tomatoes' consensus was: "A transfixing central performance by Kristen Wiig holds "Welcome to Me" together and compensates for its uneven stretches." In her next film, another dramedy titled "The Diary of a Teenage Girl", Wiig starred as a woman whose boyfriend starts a sexual relationship with her daughter. Like "Welcome to Me", the film received a limited theatrical release and was favorably received by critics. In 2015, she also played the director of media relations for NASA in the successful sci-fi drama "The Martian", opposite Matt Damon, and starred as a family practitioner who is more interested in having a baby than having a boyfriend in the black comedy "Nasty Baby", directed by Chilean filmmaker Sebastián Silva.