Is this illegal?

I became the sole custodian of my daughter when her mother and I divorced. I moved 5 hours away for work. When my ex wife came to town to visit, I would allow her to stay in my home while I ran errands, went to the gym, etc. My daughter told me Christmas 2006, Mommy was taking pictures of stuff when I wasn't home. The summer of 2007 when her child support increased to cover what she missed, she bagan sneaking in my home, taking my belongings. This was July 2007. Sept 2007, I receive notice she is seeking custody of our daughter. Many of the exhibits, she has are pictures of adult magazine, that were boxed in my garage and 1 adult video, which she also took from my garage and admitted it. She stole medical paper work and much more. Her attorney said, she had a right to investigate the home where her daughter was living. I said, if she was ever doubtful that I provided a safe home, she should have contacted the police to investigate me. Her attorney insists she is in the right???