Death always seemed so final to Loor. As a child she vowed to never die. As Osa's protégé, she vowed not to die until she was ready. As the Traveler from Zadaa, she vowed not to die until it was her time. It wasn't until Osa's death that she realized that death would come when it would, and her only option was to live as best she could and do her duty. The Traveler from Zadaa had to make provisions for a future she might not see.
Death was not optional for Loor. Or it wasn't until she met Pendragon.