Her nature was avenged on her tyrant grandmama: it brought up almost to her tongue thoughts which would have remained subterranean, under control of her habit of mind, or the nursery's modesty, if she had been less tyrannically treated.

They were subterranean thoughts, Nature's original, such as the sense of injustice will rouse in young women; and they are better unstirred, for they ripen girls over-rapidly when they are made to revolve near the surface.

It flashed on the girl why she had been treated tyrannically.
"Grandmama has good taste in tutors," was all that she said while the thoughts rolled over..