In the 'native spider woman story', aside from the spider woman herself, there could be various characters. There might be tribal elders who seek the wisdom of the spider woman. There are also likely to be other mythical creatures. For instance, in some tales, there are water spirits that the spider woman has a relationship with. And of course, ordinary people from the tribe are often present, who the spider woman helps or teaches in different ways.
It depends on the specific version of the story. But often there are humans, like young warriors or children who interact with the spider woman. Sometimes there are also animal spirits that play important roles in the story, such as the eagle or the coyote.