A: in the selection we have, there's not enough to make Aish anything but what she appears to be. Tonya could be the suppressed heroine.
E: I don't think she's a foil. But this is the one you are going to have trouble with. Aish is outgoing and boisterous (but not in a good way). Tonya is more reserved.
It's not C: We know very little about her from this excerpt.
I think she's a static character. Likely she doesn't change. She will keep on criticizing Tonya, who is shown to be thoughtful about what she is doing.