In January 2016, Lorde purchased a $2.84 million home in Herne Bay, Auckland. At the 2016 Brit Awards, she gave a performance of "Life on Mars" in tribute to the late English singer David Bowie. According to Billboard, Lorde said she'd be writing new material in December 2013. While responding to a fan on her Instagram account in August 2016, she said that the record had been written and they were in production stages. In November, she posted a note on her Facebook account stating: "Writing Pure Heroine was my way of enshrining our teenage glory, putting it up in lights forever so that part of me never dies, and this record - well, this one is about what comes next. [...] The party is about to start. I am about to show you the new world."  On 16 February 2017, her recording label, Republic Records, published a date of 3/7 under "Confidential Title" that revealed her much anticipated sophomore record, which later was cleared by the label. On 26 February, Lorde teased her new music in New Zealand in an ad with the dates 3.2.17 NYC and 3.3.17 NZ. Two days prior to the release, it was revealed that her debut single from her second album would be "Green Light".  Lorde revealed the title of her second album, Melodrama on 2 March. She released a new song from the album titled "Liability" on 9 March 2017. Lorde performed "Green Light" and "Liability" publicly for the first time as the musical guest on 11 March 2017 episode of Saturday Night Live. She revealed the 11 tracks of the album in May. The second single, "Perfect Places" was released on 2 June 2017. Six days later, the Melodrama World Tour was announced, beginning in Manchester on 26 September 2017, with Khalid acting as support for the European portion of the tour. The final promotional single, "Sober", was released on 9 June 2017, and the album Melodrama was released on 16 June 2017. Two months later, a remix of "Homemade Dynamite", featuring vocals from Khalid, Post Malone and SZA was released on the third single from the album. It received a nomination for Album of the Year at the 60th Annual Grammy Awards ceremony.

Answer this question "What did she do in 2016?" by extracting the answer from the text above.
In January 2016, Lorde purchased a $2.84 million home in Herne Bay, Auckland.