I love the word douchebag too! It still offends some people even though it's a popular phrase over here and has been for awhile. Sometimes I just say douche or d-bag...it really depends on what the situation calls for.
The only problem with her is that she doesn't respond to subtly or implications that she's obnoxious. I guess we'll just have to write "STOP BEING DOUCHEY" on her wall. You think? :D