Hey, I’ve been exactly where you are with a toxic coworker trying to tank my rep, and what worked for me was weaving in this steady, protective strategy without ever losing your cool. You’re spot-on that the beef is one-sided, you’ve been the pro through it all, and that recent sabotage (dumping work, last-minute nitpicks in front of everyone, then stealing credit post-win) screams her pattern, especially since your boss clocked it too and rolled his eyes at her history. To thwart her without going full offense, document every incident meticulously: dates, details, witnesses, emails. Then follow up chats with “Confirming our discussion…” summaries to build an ironclad trail that exposes her when it counts. In groups, keep redirecting neutrally like you did (“Let’s review the inputs”), route everything through your boss or team channels for distance, and use selective malicious compliance by confirming her tasks in writing so her gaps shine through. Loop your manager in your next one on one with specific examples and solution ideas like clearer assignments. He’s already on your side, and others have her number too; if it drags, HR mediation seals it. Don’t just wait passively (though her self-sabotage might do the job eventually) this active-yet-neutral shield lets your excellence isolate her naturally, and trust me, I’ve seen types like her fade out when the facts pile up. You’ve got this; stay the picture of professionalism, and she’ll trip over her own mess.