Domestic Violence/Deportation Domestic Violence & Civil Orders

Hello. I am an illegal immigrant from Mexico. I have been living in America for 10 years as work is significantly easier to find and maintain here in the States. I was arrested for driving without a valid drivers license in January 2010 and deported back to Mexico one month later. I returned back to America in March 2010. If i were to get caught again i would have to serve 5-8 years in prison. Just recently, as of 6/26/2014 my ex-wife of 8 years has filed a Civil Summons Domestic Violence Protective Order case against me. We separated 3 months ago and have not spoken in one month. The problem was ignited when I bought my children shoes and toys and brought them to where she and I both work to give to my kids. Later that day she returned the items opened, mismatched, and without the receipt in a plastic bag which I found on the floor. I went to her house to give it back and talk and the next day i received the Civil Action notification packet via police at work. In this she stated numerous examples of domestic violence actions that were perpetuated against her. One example is when I threatened a person with a knife, but again this is word against word. It is word against word and she has no evidence of what she claims. I must appear at court 7/3/2014. I was wondering if they would do background checks that would cause me to go to jail. I was also wondering if I stood a chance in not going to jail and what legal steps, precautions, and actions must be done. Thank you for your time and help as this is greatly appreciated.