Wounded and desperate, Ymir found an unusually large tree with a chasm at its base. Ymir’s corpse was forcibly cannibalized by her daughters Thirteen years after acquiring the power of the Titans, Ymir died while thwarting an assassination attempt on Fritz, but then found herself in a mysterious, barren land.
Episode killed: “The World the Girl Saw: The Struggle for Trost, Part 2” (Season 1, Episode 6) Although they didn’t die at the hands of a Titan, Mikasa Ackermann’s parents’ death … Ymir’s curse is basically said to give the founding titan holder a life span of 13 years after acquiring the power.
Ymir spent 60 years as an ordinary Titan, and did not begin aging again until she regained her human form. This suggests that while Ymir was physically and mentally 17, her chronological age was most likely between 70 and 80 years of age.