I think as time has passed, I've just been able to define when and what I don't like about her character.
There's a good number of episodes where she's fine (ncluding the first three season where I didn't have a problem). Then the next two season came around, which brought her spoiled behavior in 4 and bratty behavior in 5. This featured a good chunk of some of her more 'notorious' moments. 6 and 7 were an improvement, but with some notable exceptions. I'm not fond of her character in 8 either. She brings out some of the behavior that has made some people frustrated with her, despite that since those times she is now older and a bit more aware.