Had it been a little clearer in its terms, it is possible that Mrs. Inglethorp, warned in time, would have escaped. 
Someone tried to warn Mrs. Inglethorp, but it was already too late. 
mnli hypothesis: Someone tried to warn Mrs. Inglethorp, but it was already too late.  premise: Had it been a little clearer in its terms, it is possible that Mrs. Inglethorp, warned in time, would have escaped. 