Had it been a little clearer in its terms, it is possible that Mrs. Inglethorp, warned in time, would have escaped. 
There was no way for Mrs. Inglethorp to escape. 
mnli hypothesis: There was no way for Mrs. Inglethorp to escape.  premise: Had it been a little clearer in its terms, it is possible that Mrs. Inglethorp, warned in time, would have escaped. 