Light o' the Morning by L.T. Meade

But although Mrs. O'Shanaghgan spoke of her daughter to herself as deceitful, she did not at all give up the idea of her accepting her uncle's invitation. George Hartrick had always had an immense influence over his sister Ellen. He and she had been great friends long ago, when the handsome, bright girl had been glad to take the advice of her elder brother. They had almost quarreled at that brief period of madness in Ellen Hartrick's life, when she had fallen in love with handsome Squire O'Shanaghgan; but that quarrel had long been made up. Mrs. O'Shanaghgan had married the owner of O'Shanaghgan Castle, and had rued her brief madness ever since. But her pride had prevented her complaining to her brother George. George still imagined that she kept her passionate love intact for the wild Irishman. Only one thing she had managed ever since their parting, many years ago, and that was, that her English brother should not come to see her in her Irish home. One excuse after the other she had offered, and at last she had told him frankly that the ways of the Irish were not his ways; and that, when he really wanted to see his sister, he must invite her to come to England to visit him.

Hartrick was hurt at Ellen's behavior, and as he himself had married about the same time, and his own young family were growing up around him, and the making of money and the toil of riches were claiming him more and more, he did not often think of the sister who was away in the wilds of Ireland. She had married one of the proud old Irish chiefs. She had a very good position in her way; and when her son and daughter required a little peep into the world, Hartrick resolved that they should have it. He had invited Terence over; and now Nora's letter, with its perplexity, its anguish, its bold request, and its final tenderness, had come upon him with a shock of surprise.