[6] On November 25, she injured her shoulder in a national game against Slovakia and missed eight weeks.

[8] In December 2016, Gunnhildur was named the Icelandic Women's Basketball Player of the Year, ending Helena Sverrisdóttir's eleven-year reign.

[9][10][11] After the 2017 finals, Gunnhildur revealed that she was pregnant and as a result would miss most of the coming season.

[12] Gunnhildur averaged 11.6 points and 5.5 rebounds during 2018–19 season and was named to the Úrvalsdeild Domestic All-First Team for the third time.

[17] Gunnhildur's sister is basketball player Berglind Gunnarsdóttir, who played for Snæfell and the Icelandic national team.