One of the secretaries in my lab is regularly forwarding spam emails entitled "Recently opened vacancies at [fake recruiting company]", apparently thinking that it's relevant to us PhD students. To put things in context, there is no doubt whatsoever that this email is spam and not genuine.
I would like to tell her to stop, because that scummy company has already gotten all of the emails in my lab (thanks IT department for putting them all on a single, publicly available page), so I get them, but gmail correctly classifies them as spam. However when she forwards them, they don't get marked as spam (she usually sends important messages).
I am aware of this previous question. However, I think the power dynamic is sufficiently different enough to warrant a new question. Indeed, she is not a "coworker" in any meaningful sense: the accepted answer to the other question starts with "Since you are a peer".
But although we do work in the same lab (in my countries PhD students are regular employees of the university, with a work contract, a salary, etc), we have a completely different hierarchy, I don't think I know clearly who her superior is and it's probably someone in the central administration, and while I do interact with her from time to time she might as well live in a different world. Besides as a PhD student I'm still half-seen as a student and requests are not necessarily taken seriously.
What (if anything) can I do in situation?
To clarify the question: we are not "peers" in any sense of the word. She is of the administration, I am a researcher. She has been in the lab for probably decades, I have been in the lab for two years. I use "vous" when speaking to her, she uses "tu" when speaking to me. And so on. I believe this makes the question different from the proposed duplicate.