Doodle my turn, what in this between Virginia and Andrew would you consider as proof ?
I don't think it can be proven, which is why I think that the balance of probability has to be taken into account. Photographs, witness statements from other victims, evidence from staff and other people known to have been on the premises - that sort of thing. I think it was a mistake to allow a pay-off.
If the burden of proof is too high then very few cases of any sort will ever be proven. What is decried as 'he said/she said' is just another way of describing witness testimonies, which, if accepted by a jury, count as evidence. If they never get their day in court then a jury never hears them.
It has to be a balance between justice for the accused and justice for the accuser. Even if someone witnesses an assault, theft, rape, whatever, it is still 'he said/she said' is it not? People were found guilty before we had DNA evidence - what counted as proof then?