My Girlfriend Took Her Parents on a Trip I Paid For and Slept at Her Ex's House Instead

My girlfriend took her parents on a weekend trip I paid for, checked them into a hotel room I booked on my card, and then texted me at ten at night to say she was sleeping at her best friend's place an hour away. A man she dated twenty years ago. When I offered to pay for the ride back, she told me I was controlling, said good night, and hung up. She had packed an overnight bag before she ever left our house. What she forgot is that every dollar of that weekend was on my statement, and that the studio she built her whole career in has my name on the lease.