Selmie is a character in The Legend of Zelda: Breath of the Wild. Selmie is a Hylian and legendary Shield Surfer The Duchess of Downhill who can be found at Snowfield Stable in the Tabantha Tundra region of Hyrule or Selmie's Spot in Hebra Mountains region. At the stable she proposes to Link a mini-game at her snowy spot consisting of shield-surfing.
According to Baumer, when he was a kid he was saved by a talented shield surfer who is implied to be Selmie though this is unconfirmed as Baumer had forgotten her name.
According to Selmie's Notes in Hebra Trailhead Lodge at the foot of Rospro Pass , she is the owner of Hebra Trailhead Lodge as well which she set up as a safe place for travelers to rest and prepare before hiking up further into the mountain as the mountain can easily lead to the death of unprepared travelers. It is also implied that Selmie herself has retired from Shield Surfing. Selmie is shown to be quite popular with one shield surfer leaving a note in her notebook asking to marry her if he can prove he is a better shield surfer. The notebook also reveals she is the one who set up the flags on Hebra Mountain as guide posts for travelers to help them avoid getting lost.
Upon talking to her, Selmie will make a remark about the shield Link is currently wearing on his back, though this will not happen for certain types, including the Hylian Shield.