Is 'She kept her most important papers in a purple despatch-case, which we must look through carefully."' a fitting logical lead-up to 'We must carefully look through the striped, velvet despatch-case that she kept her most important papers and money in.'
She kept her most important papers in a purple despatch-case, which we must look through carefully."###We must carefully look through the striped, velvet despatch-case that she kept her most important papers and money in.