Don't let the door slam on your way out
No seriously, Emily has put herself in the public eye so she has pretty much signed for people to write bad stuff about her. Because you are a personal friend doesn't mean it will stop. You should just ignore them and move away from that post because for every bad post about someone, there is always a good one. Forums are for expressing opinion whether you will hurt anyone on it so just leave them to it, you have your opinion and let them have theirs.