Oh, there's been plenty of times when I wonder why I bother trying. ( A smile, and a gesture, and she means it. ) But that doesn't mean I won't keep trying. Nor does it mean you shouldn't, either.

( Trying to--not save the world, exactly. Only people. She was once part of an organisation that tried to save the world from itself, and now she knows that that's a fool's errand. The best you can really hope to do is staunch some bleeding, prevent barbaric diseases, try to instill a bit of your hope in others. This is how she tries to make a better world. As for the walking: )

The wonders of modern medicine, no? ( She places one of her hands on her forearms, indicating the suit she's wearing. ) A little help from my very own research! It helps keep me in peak perfomance, given a bit of time, like all good things.