It really just makes me sad because Blair has been such a great friend to Serena at times in the past, so we know she has it in her!
ETA:
Yeah, honestly, I love Blair too. She's been amazing at times, but right now at this particular time, I don't care what happens to her. She'd deserve it after these past two episodes letting down the two people who she is closest to and who are always there for her, especially this season.