They'd track her friends instead. She'd need to live like an isolated hermit and avoid contact with anybody who carried a phone, which is everybody. Short of

They'd track her friends instead. She'd need to live like an isolated hermit and avoid contact with anybody who carried a phone, which is everybody. Short of hermitage; at the very least she'd need to adopt a new identity and ghost everybody she ever knew for the rest of her life. Not an easy task; I've heard that most people placed in witness protection have a very difficult time never contacting any of their old friends or relatives again.