her sister was the last person to see and doesnt seem to want to answer qustins about it maybe they should start there.
I think possibly because Charlene had drifted into prostitution, was taking money for sexual favours or had been groomed by the two defendants. As we know subsequently from Rochdale, Rotherham, Oxford and others this was not uncommon, though to end up in murder this was an extreme case. Maybe Rebecca just didn't want to face facts, felt embarrassed about talking about it or still had feelings of guilt about the whole business.