Deidre is a stuck up, high and mighty girl who constantly gossips about the other girls in the neighbourhood and say some very horrible things. She follows all of her sentences with a happy smile and a laugh even when she's talking about something terrible and this usually comes into action when she gossips about something extremely serious happening to someone like that person getting a divorce, getting severely injured, or even dying. Deidre is also pretty racially insensitive, especially when it comes to Jessica. She'll say some derogatory things about the Asian culture. Deidre out of selfishness or insensitivity will say things like "Jessica? I was expecting something for foreign." or "She's cutting big pieces of her cake because of communism." Because of this, Jessica had her feelings hurt about this and she turned to Honey as her new friend.
Basically, nobody really likes her but they all follow her and be friends with her because everyone else is and they're afraid that they'll be shunned if they don't.