The idea obsessed her to the exclusion of all others, and made her watch her teacher as if by her very concentration of thought upon her some way out of the difficulty might be evolved; as if Margaret herself might give forth a hint of weakness somewhere that would show her how to plan.
To that intent she had come close in the group with the others around the teacher at the close of meeting, and, so standing, had overheard all that the Brownleighs had said. The lightning flash of triumph that she cast at Margaret as she left the school-house was her own signal that she had found a way at last. Her opportunity had come, and just in time. Forsythe was to arrive in Arizona some time on Tuesday, and wanted Rosa to meet him at one of their old trysting-places, out some distance from her father's house. He knew that school would just be over, for she had written him about Commencement, and so he understood that she would be free. But he did not know that the place he had selected to meet her was on one of Margaret's favorite trails where she and Bud often rode in the late afternoons, and that above all things Rosa wished to avoid any danger of meeting her teacher; for she not only feared that Forsythe's attention would be drawn away from her, but also that Margaret might feel it her duty to report to her father about her clandestine meeting.
Rosa's heart beat high as she rode demurely home with her father, answering his pleasantries with smiles and dimples and a coaxing word, just as he loved to have her. But she was not thinking of her father, though she kept well her mask of interest in what he had to say. She was trying to plan how she might use what she had heard to get rid of Margaret Earle. If only Mrs. Brownleigh would do as she had hinted and send some one Tuesday morning to escort Miss Earle over to her home, all would be clear sailing for Rosa; but she dared not trust to such a possibility. There were not many escorts coming their way from Ganado, and Rosa happened to know that the old Indian who frequently escorted parties was off in another direction. She could not rest on any such hope. When she reached home she went at once to her room and sat beside her window, gazing off at the purple mountains in deep thought. Then she lighted a candle and went in search of a certain little Testament, long since neglected and covered with dust. She found it at last on the top of a pile of books in a dark closet, and dragged it forth, eagerly turning the pages. Yes, there it was, and in it a small envelope directed to "Miss Rosa Rogers" in a fine angular handwriting. The letter was from the missionary's wife to the little girl who had recited her texts so beautifully as to earn the Testament.