hlín made her úrvalsdeild debut with valur in 2015. she played her first game on september 1, 2015, when she replaced berglind rós ágústsdóttir in the 64th minute in a 0-4 defeat against þór/ka. it would be her only appearance that summer. hlín's first goal for her senior side came against breiðablik on august 10, 2017 in a 2-0 win at home.