From Railway site:
Allotment of coach/berth/seats will be done as per existing allocation logic available in the PRS. We do not guarantee allotment of seat/berth of your choice. Furthermore, it is not possible for us to advise you whether your choice of berth is being allotted or not. In case a lady passenger alone or with children under 12 years, is willing to reserve berth/berths in ladies quota wherever earmarked, she can give choice 'Ladies' in the field of quota. If berths are available in ladies quota the system will allot accommodation in ladies cabin ""otherwise accommodation will be allotted in General quota"",
No...
more... mention of priority to Single Lady passenger at latter stage when berths are canceled in LD quota.It clearly says berths will be allotted in LD quota only when available otherwise in GN quota.
Now how to confirm your statement when official version is not available?Clearly no single lady passenger will take risque to book a WL for such so called priority confirmation ground.
Even if you are correct it is very tough to prove on chart.