I agree with the others that it isn’t safe.
Pennzoil used to make a product called “Roadside Rescue” that was supposed to be a non-flammable emergency fuel substitute. I am not sure how a non-flammable liquid could substitute for gasoline, so don’t ask me how it works. I don’t think they make it any more, but perhaps you can find something like it at your local auto parts store.
If your friend has a working fuel gauge and a brain, she should be able to find a gas station before she runs out of fuel.