Despite the major setback, she stayed stoical and didn't show any emotions.

stoical 源自名词 stoic（斯多葛学派），指古希腊哲学流派主张克制情感、理性面对逆境的态度。作为形容词时表示"坚忍的""冷静克制的"，形容人在困境中保持镇定自若的状态。