This is a tough one. I don't believe for a second that God wants us to be abused, there is also the chance that the unbeliever can be brought around to see the light, with God all things are possible! God did not create the unity of marriage for divorce. Against His initial design of marriage, God did make a one provision; adultery. I would pray, even fast from something if you must, but pray for GOD'S guidance. We, who have been hurt, will only guide you to the defense. God is your best counselor. You may also want to start with a study for yourself such as "Beauty for Ashes" by Joyce Meyer. Best of luck sweety.
To the rest I say this (I, not the Lord): If any brother has a wife who is not a believer and she is willing to live with him, he must not divorce her. And if a woman has a husband who is not a believer and he is willing to live with her, she must not divorce him. For the unbelieving husband has been sanctified through his wife, and the unbelieving wife has been sanctified through her believing husband. Otherwise your children would be unclean, but as it is, they are holy. But if the unbeliever leaves, let him do so. **A believing man or woman is not bound in such circumstances; God has called us to live in peace. How do you know, wife, whether you will save your husband? Or, how do you know, husband, whether you will save your wife? (1 Corinthians 7:12-16) Wives, in the same way be submissive to your husbands so that, if any of them do not believe the word, they may be won over without words by the behavior of their wives, when they see the purity and reverence of your lives. Your beauty should not come from outward adornment, such as braided hair and the wearing of gold jewelry and fine clothes. Instead, it should be that of your inner self, the unfading beauty of a gentle and quiet spirit, which is of great worth in God’s sight. For this is the way the holy women of the past who put their hope in God used to make themselves beautiful. They were submissive to their own husbands, like Sarah, who obeyed Abraham and called him her master. You are her daughters if you do what is right and do not give way to fear. (1 Peter 3:1-6)