What is her purpose/audience in writing this? How does she get her message across? Would you consider this writing-as-activism? Why or why not?

Her purpose is to inform the audience, anyone or specifically nursing mothers, about the harmful effects of the dioxins in breast milk. She gets her message across by bringing in a plethera of research that she has discovered. This makes her point very viable and gives good background so the people believe her. I would consider this as a form of activism. This is because she is standing up in some way for what she believes is right. She knows the harmful effects things like dioxins can bring to babies. Not just that she is also informing about whatever we put into the environment can come back to harm us if it is bad.