EDIT: Oh, I see what you're actually saying. Well, my post still stands... but I agree with the guy above... Zelda wouldn't do a thing like that even if she was capable of travelling back and doing so. She's a princess and has shown all she wants is the best for her kingdom... and I don't really think giving Ganon the triforce encompasses that. After all, in TLoZ she made a massive effort to hide the ToW from Ganon... when she could've just given it him instead. What. That doesn't add up at all...
It's kind of mindboggling to think about... but I don't think it's at all plausible.
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My memory's a bit blurry on this one... but regardless, Zelda is the leader of the sages in OoT, and she shows that with the Ocarina of Time, she can at the least send other people through time. So your question is a valid one in some ways, because in theory this means Zelda -could- have done something (like what you said). But in fact, in OoT for example, she did do something about it- she sent Link back in time, presumably working on the basis of that enabling Link to stop Ganondorf taking over before it was too late, as well as undoing all the trials Link had to bear.
Of course, now we can see that this probably wasn't the best idea since it caused all sorts of complications (the split timeline and the doom of Hyrule, for once thing)... but we have the benefit of hindsight. Zelda couldn't possible have know the ins and outs of the consequences of sending Link back when she did it, because although she may have the Triforce of Wisdom, it doesn't automatically mean she's omniscient... after all, wisdom is merely inferring the most beneficial action in a situation... which to Zelda at the moment she did it, sending Link back in time was.
However, there's also the matter of the prophetic dreams she tends to have... we could say she should have acted upon them sooner, she should have realised what they meant, she should have realised what was going on etc etc... should, would, could... you just get into an endless debate if you think about it like that. You could say it's oh, I don't know, Fado the Kokiri's Fairy's friend's fault for not seeing Ganondorf poison the Great Deku Tree, and for not flying to the King of Hyrule and making him listen. It gets ridiculous. You could blame anyone you wanted that way XD
I suppose though, in many cases there is something more Zelda could have done, or a better descision she could have made, so it is her fault... but it's hardly fair to blame her alone.
Forest, Water, Fire, etc).
