maintain (one's) self-control

Translations
сохранять самообладание
Despite the chaos, she managed to maintain her self-control.
Несмотря на хаос, ей удалось сохранить самообладание.
Definitions
To manage and regulate one's emotions, reactions, and behavior in challenging or stressful situations, ensuring that one does not act impulsively or lose composure.
Words
maintain

verb
сохранять
one

pronoun
свой
is

functional word
есть
self

noun
самообладание
control

noun
контроль