Tiff, you are so fortunate to have so many wise and caring people around you here. As I have read everyone's responses, I realize that there is much love here, and lots of good advice and encouragement.
Like everyone, I too have a situation with my own daughter, who will not speak to me. I would have loved to have seen her this Christmas, but she chose again, not to involve herself with the rest of the family. However, she did accept my sister's invitation to spend some time with her, and in the process of their talking, she expressed that she is exploring other faiths, one being not a Christian one. This is a heartbreak to me, but you can be sure that my prayers will increase for her, that she will return to the love of God that she was raised with. My point here though is that instead of "preaching" to her, Mary gave her an understanding ear, and just let her talk. I know my daughter well enough to know that this is the best way to deal with her. It isn't our job to change someone's heart. That's God's responsibility. Arguing and persuading usually only leads to more resistance. She knows what is right, and it is our job to pray for her to soften her heart, so that she can let that Light back into her heart that I know was there when she was a young child.
She lost herself to God's love many years ago, but Tiff, sweetie, you have not lost yourself. I know you are concerned about this right now, but the mere fact that you are concerned about how to deal with these family members who want to put you down when you express your beliefs and your love for God, and what He has done for you, makes me see that you are discouraged, not about yourself, but about your family whom you love.
We know your heart here, and it is one that will be a beacon for those willing to let their hearts open up to the treasures that God has in store for them. Don't let Satan use this discouragement to convince you that you are lost too. You know where you are going, and Who is leading the way. Just continue to pray for those who do not understand, and follow the advice of those much wiser than I who have already responded to you.
I'll be praying not only for you, but for your family, as I desire your prayers for my daughter. We mustn't lose sight of Jesus, and use this heartache to increase our prayers for our loved ones who have not chosen to see the better way.
Love and prayers,