I mean maybe they were fighting and Gandalf went ahead - being a wizard after all and Galadriel being wise but more a councillor than a warrior - after a period of time he has not come back and she feels forced to go look for him, finds him incapacitated for whatever reason and helps him, the cause of his injury has fled.

This would work i think in terms of - shows she is caring and brave but is not the ultimate xena-warrior elf who is better than Gandalf. It would also perhaps let the audience see that Gandalf is indeed 'stronger' than Galadriel is but what he was facing was his match - Sauron.

Or perhaps they are just wanting young girls who are watching the movie to feel they have a role model - the perfect woman - kind, wise, brave, beautiful, strong etc.

What Phillipa said makes me think it is more the second idea which is fine so long as they dont change the dynamic of their relationship which i think can be maintained if they play it out like something along the lines i said above.