In November 2018, Butler signed with Valur of the Icelandic Úrvalsdeild kvenna, replacing Brooke Johnson. On 16 February 2019, she won the Icelandic Cup after Valur defeated Stjarnan in the Cup finals, 74–90. In the game, Butler had 15 points and 8 assists. On 27 April 2019, she helped Valur win its first ever national championship after beating Keflavík in the Úrvalsdeild finals 3-0. In 29 regular season and playoffs games, Butler averaged 21.9 points, 4.9 rebounds and 4.4 assists per game.
