I have a friend that changed phones, took all the contacts she wanted with her, then managed to split those between 3 google voice numbers.
When her ex started harassing her phone she deleted her google voice numbers, reshuffled the friends, and assigned everybody new numbers. Eventually she found the people enabling her ex and cut them out of her life too.
You can run and hide pretty effectively if you just make a plan not to go back to your old life, and I say that as someone who's been stalked in the past.
That right there is f'ing smart. She figured it out and did the right thing.
This girl needs to make a decision. If she's willing to be beaten, she's already made it. It reads colder than I intend, but it's the truth.