She debated the best Vietnamese translation. “Sao cô vẫn cố gắng?” (Why are you still trying?) or “Điều gì khiến cô mạnh mẽ đến vậy?” (What makes you so strong?) She chose the latter. It felt more poetic.
For those searching for here are the pivotal episodes where the subtitle quality makes or breaks the experience: Raeng Tawan Vietsub