[ She manages to zero in on a particularly sore spot. He could have lied or made false promises, but even if he had a solution, it might not save anyone. ]

Because it's not an answer. All you're doing is creating a bigger problem that will do more damage than the Huntress ever could. You break time, there's no do over. The world ends and takes everyone you tried to save with it.

You think you know regret, you're looking at someone who let time travel ruin their life. This will be yours unless you can convince the others not to go through with it.