Brought a message from Mrs. Vandemeyer, I suppose?" 91 "Not exactly," said Tuppence.
Tuppence relayed an instruction coming from Mrs. Vandemeyer. 
mnli hypothesis: Tuppence relayed an instruction coming from Mrs. Vandemeyer.  premise: Brought a message from Mrs. Vandemeyer, I suppose?" 91 "Not exactly," said Tuppence.