So I already pushed back on some of her unreasonable demands already, and essentially I’m trying to ready myself for more little skirmishes even though it scares the shit out of me. My boss has assured me she has no authority over me and the org chart shows that plain as day, I’m just not used to telling someone who is technically higher ranking than me no in polite and tactful ways when appropriate. This team has been such smooth sailing (interpersonally) up until now.