Back-Biting: The Christian Way

I have been so discouraged these past months of my ministry in my pastorate. Sis. _____ has been winning a lot of brethren for her campaign probably to prove that I'm not a good pastor. I wonder what God wants me to do with her. I can't see myself confronting her, how then should I react? Should I remain silent?Should I tell someone about it?
Well, God has been so good. He led me to the right decision. I was reading my Bible yesterday on Mark 7 and He showed me the best way to approach such people. I was amazed on how Jesus treated the Pharisees. He didn't confront them, neither told His predicaments to other people. Instead, Jesus approached the back-biters in most just and kind way. He spoke and quoted from the scriptures. I think God is teaching me to love the unlovable. To care for them even if they don't care about me. And that's what I think God wants us to do with 'back-biters".