<human>: First time posting a text question so please share some new love.

My sister's friend just recently lost the opportunity to go into dentistry school after failing the interview. She had perfect marks, was part of a Sydney exchange program, and even won an academic award at UBC Human Kinetics faculty, but she couldn't give a good answer to two questions she was asked:
1. What is a promise that you've broken and why? 
2. What is the hardest decision you've made?
Her answers were something along the lines of 1) I've never broken a promise and 2) I've never been placed in a situation where I've been forced to make a hard decision, which both are quite obviously wrong answers but to be fair, she was put on the spot and I'm pretty sure I would have come up with something worse.

So reddit, what would you say in that interview? Would you fail like me? Because I don't have a good enough response yet, even after thinking for several hours.

Could you distill the essence of the text into 1-3 sentences?
<bot>: A friend failed an interview after giving shitty answers to: What is a promise that you've broken and why? What is the hardest decision you've made?