What does it mean if your really close friends say they dont like gifts?

Well this all started with her loosing her phone. She cant find hers and wont buy a new one, even though she hated her old one. We text constantly, and i offered to spend $50 to buy her a new one as a gift. Now every time she sees me or talks so me it comes up and she always tells me not to buy her anything. With Christmas coming up i really want to buy her something but shes not letting me. What do i do? Her friends are telling me the only gift she’s ever accepted was a shirt. I’m torn.