As you move through this life and this world you change things slightly, you leave marks behind, however small. And in return, life - and travel - leaves marks on you. Most of the time, those marks - on your body or on your heart - are beautiful. Often, though, they hurt.
She's mad, but she's magic. There's no lie in her fire.
Among other things, you'll find that you're not the first one who was ever confused and frightened and even sicked by human behaviour.