I wouldn't takae her either. She is still contagious if she still has the runs. These things spread like wildfire and I believe really strongly that anything that has the potential to make someone else sick should be kept at home. There could be an immuno suppressed person, someone with other small kids or a newly pregnant woman. All would really suffer if they were to "catch the bug".

It's disappointing when these things happen when something's on we really want to go to but in the interests of everyone (your little one is probably still feeling a bit under the weather too) I think it's best to steer clear.