In the end, all he can do is lift his shoulders into a shrug. It's not to show indifference to her struggles or to her fears, but instead to show how little impact he feels that would have to her overall character. In the end, what someone would truly be in a different life is unknowable.

"I understand how it feels to live a life defined by one's circumstances." Despite all his determination, his goals have ever been reactive. He fought against the pain inflicted upon him, first and foremost. Without that pain, his identity is impossible to define. He feels the same may go for her - reacting to one threat after another, with no time to pause and think of what there'd be left beyond that struggle.

"I care not for what you could be, only what you are. Another being, outside of your choices and your circumstances... they are not meaningfully you at all, are they?"