So thought it better to come home and have a quiet evening. Mrs. Vandemeyer said nothing, but she drew back and let Tuppence pass into the hall.
Mrs. Vandemeyer was thinking of a lot of things, deciding to not say anything. 
mnli hypothesis: Mrs. Vandemeyer was thinking of a lot of things, deciding to not say anything.  premise: So thought it better to come home and have a quiet evening. Mrs. Vandemeyer said nothing, but she drew back and let Tuppence pass into the hall.