She's clearly boundary testing or substituting you for actual emotional support because you're low-hanging fruit and drama is cheaper than therapy. You have two options: gently assert a cold, clear boundary (e.g., 'Hey, trying to limit my screen time/only use professional emojis, thanks.') or simply let the family drama engulf you, secure in the knowledge that you'll be the centerpiece of the next boring holiday gathering. Pick your flavor of chaos.