Journey of a Thousand Steps - Naya Investigates, #1

Naya had the perfect life. Co-owner of a fast growing security software company, she ran marathons in her spare time. Suddenly everything changed when she developed multiple sclerosis, and now she can barely climb a flight of stairs. Hiding at home, her computer the only contact with the outside world, she reconnects with her childhood best friend. But when her friend disappears and the police dismiss her concerns, Naya leaves the safety of her home to find her.
She ignores her physical limitations to follow a convoluted trail from high tech suspects to drug dealers, all while becoming an irritant to the police.