As someone who hates most of my family, if I was in this situation, and that's the response my parents gave me, I would gladly, without a doubt, 100% stay home

Did it ever cross your mind that he might have abused her? And that she might not want to discuss it in front of him, at the airport? I'm not a religious man, but I pray you don't have children, or that any children look to your for protection.

Perhaps you should look at your view of people. You automatically assume a 21 yo is acting like a child for no reason, and say they all act that way. If you know anything about trauma than you'd know it can cause you to act aggressively when in fear. This women clearly didn't want anything to do with that man. And as the mother thought it was a fav relative that means they probably spent a lot of time together. So clearly something happened that the mother isn't aware of because the daughter even said she'd give up the vacation to not have to be near that man. If she didn't give a reason but was still willing to make a scene than it must have been something extremely hard to talk about. Ponder that.

I think it's pretty clear that I'm replying to the person who commented after, not the original poster.

As a person in her early 20s, **** you

They're​ saying it's a possibility not because he's a man, but because a 21yr old got incredibly upset about having to be around him. When a grown adult goes off like that about having to be around someone, you need to stop and ask yourself why, regardless of the gender.

Not everyone is assuming he's a perv, most are simply saying there has to be a reason the daughter is acting like that. That doesn't necessarily mean something inappropriate, they could've had a fight or something. The point is that these comments are trying to get OP to be a good parent and talk to her about it instead of judging. I'm sorry you felt that there is a gender bias here, but please do realize that you were making assumptions as well when you thought everyone was calling the uncle a pervert.