Yes, it's definitely her ear lobe that's swollen. If you have an otoscope at home, you might be able to look into her ear canal to make sure nothing is going on down there to cause the swelling. I do see an actual abrasion on the lobe. If she sustained similar injuries in August, an abscess could be a possibility and maybe that's why she was attacked. An inner ear infection could hinder her ability to fly, if she's normally able to fly away. To be honest, I'm just offering up guesses. In my flocks, the smallest and/or Bantams are either at the top of the pecking order or the bottom. So they're either fiesty or extremely submissive, not in between. Did you give an antibiotic in August? I'm so happy she's drinking for you. Hopefully she'll start improving today and eat.