[36] In any event, it is very hard to see how the evidence could ever have become relevant, given the concession as to dates. The complainant was entitled, if challenged as to her failure to complain, to rely on the threat, and to explain its significance as causing her to believe that if she did complain her uncle would be returned to gaol, from where she understood him to have come. She did not in fact do either of those things; but even if she had, there was no prospect of the defence challenging her evidence that he had been in gaol. It is very difficult therefore to see why it should have been thought necessary or permissible to lead the evidence of imprisonment in the Crown case. And what was significant in explaining the appellant's failure to complain (had the evidence come up to proof) was her apprehension of the situation, rather than the objective fact that the appellant had been in prison. The threat had bearing only in respect of its effect on her and her understanding of what would happen if she did not comply. It did not matter whether her perception was soundly based; although if it had emerged from the complainant's cross-examination that the appellant had been imprisoned, it might have been fair to allow him to lead some evidence, in the manner he in fact did, as to the relatively brief period involved.