LBS should be good however if she's not real confident a quiet wide long straight path with few or no people. Last July I reacquainted myself with cycling after 43 years. I just got on and rode it and that was that. (In another lifetime I was a Navy carrier pilot so YMMV.)
Rich
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..life is like a roll of toilet paper. The closer it gets to the end, the faster it goes. ― Andy Rooney ...enjoy what's left!