Let her try out the Douze and see how she feels? I live in the West Midlands, not exactly - WMP's enlightened policy on close passes aside - a particularly cycling-friendly place, but I've found that the WTF factor of a cargo bike means you generally get a fair amount of consideration and room from drivers. Greater familiarity in London's famous London may breed contempt, I don't know, but then you've got better cycle facilities...
Let her try out the Douze and see how she feels? I live in the West Midlands, not exactly - WMP's enlightened policy on close passes aside - a particularly cycling-friendly place, but I've found that the WTF factor of a cargo bike means you generally get a fair amount of consideration and room from drivers. Greater familiarity in London's famous London may breed contempt, I don't know, but then you've got better cycle facilities...