My daughter kept coming home from her dad’s without the little things that made her feel safe in the world. First it was her American Girl doll, then her iPad, then the gold heart necklace that had belonged to my mother, each loss followed by the same small broken explanation and the same blame falling on her shoulders. I used to think divorce was the hardest part, but it was watching my eight year old shrink weekend after weekend and not knowing why. Lily had always been bright and talkative, the kind of child who narrated her own life in drawings and dreams, but three months after my ex husband Jason moved in with Dana and Dana’s ten year old daughter Ava, her answers turned into one word and her eyes stopped looking for mine. When she climbed into my car one Sunday and forgot her backpack, Jason brushed it off, promised to drop it off later, and hinted she was getting careless, and the next morning Lily’s stomach hurt and her hair was uncombed as if sleep had been a battle she lost.When Jason dropped the backpack at noon, he didn’t come inside, and his comment about me checking her stuff more carefully sounded like a warning dressed as advice. As I helped Lily unpack, the missing doll hit me like a punch, not because of the cost, but because I remembered the Saturday we chose her outfit together and how Lily had saved allowance for months just to feel proud of earning her piece. Jason texted back that he hadn’t seen it and that Lily needed to be more responsible, and two weeks later the iPad vanished too, leaving Lily whispering that she was stupid through tears that didn’t match her age. By the time my mother’s necklace disappeared, my worry had turned sharp, especially when I heard Dana in the background comparing Lily to Ava like my child was a mess to be fixed. The breaking point came when Lily returned without a limited edition pink purse she had adored, and she didn’t even try to fight for it, only murmuring that Ava really liked it and then it was just gone. That night I cried in my kitchen, not for objects, but for the way my daughter was learning to apologize for being hurt.I bought a small AirTag and a tiny voice activated recorder, because my instincts were screaming and I needed facts more than arguments. While Lily bathed, I hid the AirTag in a seam of her new hoodie and tucked the recorder into her jacket lining, then I told her she looked pretty in the color and watched a real smile return for a moment. When she came home Sunday night without the hoodie, I waited until she slept and checked the location with trembling hands, my throat tightening when it pinged from Jason and Dana’s master bedroom closet. The recorder held hours of household noise, but then Dana’s voice cut through, pleased and practical, saying the hoodie was perfect and Ava would love it and she would wrap it for Christmas. Ava asked about the other stuff, and Dana laughed that Lily had so many expensive things she wouldn’t miss them and that some would be gifts too, and I had to stop listening before I broke apart completely. By morning I was with my lawyer, showing him the evidence, and then with Lily’s school counselor, because what was happening wasn’t just theft, it was the slow twisting of my child into believing she deserved it.