I think there's a minimum set of tools that all non-flying, street-level heroes should have: lock pick, pocket knife, grappling hook, flash light, and cellphone/communicator.
You say she never on patrol in a rooftopping city, but I can think of at least five scenes from BOP where we see her either on a rooftop or a ledge and two in JSA, and one of those scenes (BOP) has her falling off a rooftop lamenting her lack of a grappling hook.
Dinah may be a detective, spy, and work with fliers, you can say the same thing about Nick Fury and Black Widow, but I bet they have grappling hooks.