The one thing Virginia did that could come back is that she accepted the settlement without Andrew admitting any guilt what so ever, but Andrew could be questioned, why settle if you weren't guilty? Probably, not only the Platinum Jubilee, but the health of the Queen at that time were factors as we now know after the Queen's diagnosis and death.
It's also interesting that Virginia boasted she was going to sue 10-11 other men that abused her, that hasn't happened, has it?