[ He's pacing a little while they talk, but it occurs to him that she sounds so terribly exhausted. Of course she would. She makes a good point, even if he'd like to not consider such an alternative, the time may come.

Kneeling in front of her now, he reaches out to cover one of her hands, squeezing gently. ]

The right answer isn't always the final answer. Trying, because we must. But sometimes, Clara, the only choices left are terrible ones. I hope it doesn't come to that.