Do we know which side of the road she took from her friends on the north-west side of the common?
From heading north to south on the route she walked, if she walked on the east side of the road she would have crossed at the lights at the lights on the Clapham South junction, and would have continued down cavendish rd, past the now out of use police station, and would have passed the area they’ve been searching tonight. If she didn’t cross at the beginning of her route, she would have walked down the west side of the road and probably crossed at the traffic lights outside Clapham South station, potentially walked down Hazlebury road and have continued on the side of Agnes Riley Gardens.
I’m a local that has walked this route a number of times and which side you were walking on would potentially determine your route forward due to crossings. These would have been my routes, of course she could have crossed either way at any time but knowing where the last cctv image was taken, and which side of the road she was on is very important.