Hard to say. I see women out walking alone at night all the time in my city, at least a handful just past my house every evening. (It’s a university town.) I passed one woman happily chatting on her phone, and oblivious to the world, while riding home tonight after dark. The last time anyone was attacked by a stranger was, I dunno? It definitely happens, but it’s years between instances. They’d probably be safer in the late night hours, with hardly any car traffic. A lot more people get killed by cars.