She is kind of smart and will act nice to you but it's only so that she can get her way. Everything she does can be for a selfish reason even if you don't realize it. She is pretty to some but not by all. Having her as a friend is okay but you might start getting sick of her.
Debbie downers legal name. Her given family name is Deborah buzz-kill Downer. Using Deborah is the same as getting in trouble as a child and your mother calling you by your first and middle name. Using Deborah will let the person know it's just best to leave. It's the next level of Debbie downer.