Yes, Mare Barrow is still alive in the Mistborn series. She is a major character in the Mistborn saga and plays a crucial role in the events of the Era 2 trilogy.
While there were moments where her life was in danger, she survives all of them, including the events of The Bands of Mourning, The Alloy of Law, and Shadows of Self.
Mare's story continues in the Era 2 trilogy, which focuses on her adventures as a Mistborn and her efforts to protect her family and friends.
