To offer one perspective: She's not my least favorite, but she's down there. The longer the show goes, the more we learn about the housemates. I used to really enjoy her, but after awhile, I started getting a sense of entitlement from her that was very off-putting. To me, it seems she is very used to getting her way and receiving special treatment from men. I think this is why she puts so much emphasis on her looks and discredits her other qualities. I think because Ed didn't jump at the chance to be with her, she got confused and labeled Ed as too good for her. I don't think she was desperate, I think her ego was a little bruised and she became more determined to win him over. She also comes off a tad hypocritical when she complains of people talking behind each other's back, but was the spark that started the Mikkayla/Tim fight. It has nothing to do with the other housemates comments, but comments and actions she has made. After all that though, I really just don't find her entertaining, and I watch TV to be entertained.
Again, just respectfully offering a perspective. No disrespect to your fav. I think it's interesting how people interpret the show differently.