Of one element in her changed mood she could have given no definite account: it was something as dim as the sense of approaching weather-change, and had extremely slight external promptings, such as we are often ashamed to find all we can allege in support of the busy constructions that go on within us, not only without effort, but even against it, under the influence of any blind emotional stirring. 
Of another reason she could have given no definite account: it was as dim as the sense of an approaching weather-change. 