Also, do we know whether she had indeed forgotten her keys or was there another reason she didn't enter the house? It would be interesting to know what the taxi driver made of it as he dropped her off. Was it right outside the property? And wasn't she witnessed staggering away by some students who were waiting for a taxi? Did they take her taxi perhaps? Had they seen anyone suspicious hanging around? And was the CCTV of her on the bench caught on a car dashcam which was moving or stationary thereby capturing her leaving the bench?