Uh, no, I wouldn't. I'd be on high alert, warning, warning, danger! At least if you are considering going, find out the detail from her about what exactly she said and how she went about it, as well as how these other colleagues took that kind of news, you certainly don't want to be walking into a party and being made a fool of or worst, and if it seems okay, well keep it as low key as possible, as rejennyrated (cool user name by the way) said, don't want to add fuel to any possible fires. Perhaps there won't be any, maybe everyone there will be respectable towards you, or the most that'll happen is questions of curiousity, or wispering off in corners somewhere about you. Maybe she didn't mean any harm in it, but this friend needs to know this isn't the kind of thing you just go around telling anybody and everybody about, just way too much ignorance and hate out there for transgenders.