Not so hard -
You are (I infer) doing 'valuable' work for this group. A PhD in linguistics is irrelevant; your prose is understandable - this is about Style, ego and a propensity to meddle (for whatever internal reasons - you don't Need to know or even to care about.)
Tell her to back off - or
(I still like the Pecksniff ploy; it's a decent non-racy variant of Nobody fucks with Paul Lazzaro! - if you happened to read/see Slaughterhouse Five.)
or- "this is my Two Weeks notice - I'm retiring from the job."
As my Mater used to say, "you can be as easy as an old shoe and worth as little."
(And any 'suffering' over this twit's stupid chatter: is, remember: self-inflicted ie Intentional Suffering. That's also a popular pastime. But ____.)
