Hi Mystik,
No matter how things play-out here, there are two things I hope you always remember about things.
1. You are God's masterpiece (ephesians 2:10 I think). In all the amazing things God created, you, just as you are, are what God considers to be His greatest creation. Everything else was created for us! Pretty cool stuff don't ya think?
And the second thing to remember is that forgiveness is for you, not the other person. When the disciples went to Christ and asked how to pray, He gave them "The Lord's Prayer". In it it says forgive us, as we forgive others. It's not easy to do usually, but by simply forgiving, we gain power in our lives and in our hearts, through gaining closeness with Christ. Forgiveness doesn't mean being her doormat, nor does it even mean you ever have to tell her you forgive her or that you ever have to see her again. It just means you want God to bless her and protect her. It's a very powerful thing to do to her and for yourself. It will give you clarity in this situation.
I will keep you in prayer, for strength throughout this, for God to restore your heart, give you wisdom in this and all things, but mostly.....for God's peace in your heart. Peace