Who is Abby Lynn Anders from My Louisiana Sky and what is their importance?

According to Tiger, Abby Lynn Anders is the prettiest girl in Saitter. She spends most of her summer trying to win Abby Lynn's acceptance, but Abby Lynn is often unkind...... she laughs at Tiger's predicament. Abby Lynn goes out of her way to exclude Tiger, and even omits her name from the pool party guest list. All meaness set aside, Tiger continues to admires her.