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I am sorry to hear about this situation.
If the Court approves of the restraining order, then you will be asked to leave the property, I am afraid. Or rather, you will be restrained from coming near her, which by implication would require you to leave.
Defenses can vary, but the two defenses that work best are (1) denial, or, (2) if this actually happened, then it happened in self-defense and she instigated the violence - someone in your situation was simply attempting to protect themselves with reasonable force given the circumstances. Listen to your attorney, as they no doubt are experienced and will know what to say to minimize the liability.
Even if there is a restraining order, someone in your situation can always request custody/visitation schedule from the court if the restraining order is for a long time.
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