I hear ya, but let’s not sugarcoat it. I’m all for empowering women to travel solo, but South America? That’s next level. I did Peru solo last year and while it was amazing, there were def some sketchy moments. Not trying to be a buzzkill, but OP’s sis needs to be extra careful. Maybe suggest she starts with some “easier” destinations first? Or at least hook up with a group tour for part of the trip. Better safe than sorry, ya know?