This may have been because he knew by instinct that it would not be safe to do so or tend to his own comfort.

Or perhaps, it was for the reason that in his way he was fond of her, looking on her with pride not quite untouched by fear.

Like all bullies he was a coward at heart, and respected anyone who dared to stand up to him, even although she were but a girl, and his own daughter.
After the victim of the inkpot incident departed, threatening actions at law and proclaiming that her pupil would come to a bad end, questions arose as to Isobel's future education.

Evidently the governess experiment had broken down and was not worth repeating.
Although she trembled at the idea of parting with her only joy and consolation in life, Lady Jane suggested that she should be sent to school.

It was fortunate for her that she did so, since as the idea came from his wife, Mr.Blake negatived it at once firmly and finally, a decision which she accepted with an outward sigh of resignation, having learned the necessity of guile, and inward delight.