If your intention is to address any issues that you find wrong in another person then there is nothing wrong with discussing this with anyone who may help, PROVIDING this is your intention AND you will then discuss this with the person involved. Backbiting is talking behind the back of another without their knowledge just for the sake of gossip and idle mischief making which is condemned in the Quran:-
49:12 O You who have chosen to be graced with belief! Avoid much suspicion and guesswork. For, Behold! Some of such suspicion and guesswork drag down your own „self‟. And spy not upon one another, nor shall you back-bite one another. Would any of you like to eat the flesh of his dead brother? Nay, you would detest it! Be mindful of God. Certainly, God is Relenting, Merciful.
Wise elders!!! Do they understand this difference?