I just recently found out my ex wife's fiance has recently gone to jail for chronic DWI's. While serving his 2 concurrent 7 year terms he is also required to take a 2 year substance abuse program for cocaine dependency. My ex and daughter have been living with him for the past year. What are my chances of gaining full custody? Also, what are my chances of obtaining a court order for a drug test on my ex. I don't know if she has ever been a part of any cocaine use, but clearly living with a convicted felon with a cocaine dependency there is reason to believe that she has partaken too.