Maybe she was distrustful and did not want the driver to learn her precise home address.
It is perhaps a bit paranoid, but when trying an unknown and unusual service for the first time, not over the top, especially if she is a girl living alone.
Like, I have a friend who was finally convinced to take an Uber. She'd ask the driver to drop her off at the bus stop she'd usually get off at, and walk the rest of the way.