The only reason she seems to care about the liberation of Timber is because it makes her father angry and cause him problems. That's just my take on the situation, but that's how it came across to me; playing childish games with adult lives (the dedicated Forest Owls) to make daddy angry.

And now that it's been mentioned, her clingy-crap bothered me intensely, and I dislike Aerith for doing the same (though Aerith moreso, because she seemed to be rubbing it in Tifa's face, at least Rinoa didnt know that Quistis had a thing for Squall, and Quistis' wasnt nearly as deep as what Tifa felt for Cloud)... that sort of behavior deeply annoys me.

Saving her so much didnt really bother me, but it does bother me when, for example, fans bitch about having to save Rosa, which only happens twice, while Rinoa has to be saved... I believe it's five times, yes? Give or take. It did bug me that she wouldnt let the professionals do their jobs, though. She wanted their help, but then when she got it, she didnt want to let them do it their way.

Her pitching fits earlier in the game bothered me a lot too. The Forest Owls say something about it as well, and I just... blargh I hate that sort of personality, especially at her age.