1. She is not obnoxious
2. She is one of few Disney females that did not either 1) look for love, 2) made love a primary focus (ie saved by lover, had to be kissed, etc) or 3) wanted "more" out of their lives (Mulan did but that is not the reason why she left).
Although, she did let Donald Duck fall off a cliff in one episode of House of Mouse.