、。
No matter how harsh the training was, she never cried.
Literal
Training [topic-は] however harsh even, she [topic-は] never did-not-cry.
The pattern どんなに~ても ('no matter how ~') sets up a concessive: whatever the degree of harshness, the result doesn't change. 決して + negative ('never,' 'absolutely not') reinforces it on the consequence side. Note the double topic marker: first the training takes は, then she takes は — a common shape when shifting from a conditional topic to the main subject.