Because it's worth trying to stop trouble.

[ She wouldn't call herself a hero, though many others probably would. Aloy is humble that way. She shrugs a little at his words as if to say 'oh well.' ]

The kind of trouble I'm good at fixing is rampaging machines, not people. Didn't think I'd fix you, just thought I'd ask if I could help. If not, that's fine too. It's your business and I can keep my nose out if that's what you want.