So Heather, she can't talk to her friends because she's afraid that they will judge her for still loving Nick, and everywhere she turns, she gets the same advice: Leave him. Throw the dog on the curb.
Det betyder, at Heather ikke kan  tale med sine venner om det. Hun er bange for, at de vil  dømme hende, fordi hun stadig elsker Nick. Alle hun taler med, giver det samme råd: "Forlad ham. Smid hunden på gaden."