When he arrives at Itang, Salva sees, “orange… an orange headscarf,” and starts following it. Why? What is he thinking? What led you to this inference?

When Salva sees the orange head scarf, he think that he sees his mother.

He could still see the vivid spot of orange— yes, it was a headscarf— the woman's back was to him, but she was tall— like his mother— he had to catch up...."