Taretha Foxton

From wow.incgamers.com

Daughter of Tammis Foxton, called "Tari" by friends. Mistriss of Aedelas Blackmoore (unwillingly). Grew up with Thrall although had very little communications with the soon to be Warchief until she began communicating with him through letters. In, "Lord of the Clans", she started a fire in Durnholde in order to let Thrall escape his prison and flee into the woods to find his people. Also, she met with Thrall and brought him aid while he was in the woods. Was beheaded by Aedelas Blackmoore for sympathizing with Thrall. She was the only human to truly befriend Thrall and showing him that humans have a warm and kind side to them.

Thrall later killed Blackmoore for hurting Taretha.

She helped him escape and was later killed by Blackmoore for this betrayal.

She can be found in the Caverns of Time, but it's not possible to prevent her death.