I would also recommend Elizabeth Prentiss' books, especially if your wife is just being introduced to older books. Specifically, Stepping Heavenward, Aunt Jane's Hero, and her life and letters. These books give a good introductory picture in story/biographical form of a what it is to be a godly woman, and are very easy and enjoyable reads. Elizabeth Prentiss was the daughter of Edward Payson and the author of "More Love to Thee" and other hymns.

Incidentally her sister Louisa wrote an amazingly good and very easily understandable/readable introduction to Calvinism in The Pastor's Daughter, largely a record of her father's conversations with her when she was a little girl.

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Heidi
Indianapolis, Indiana

After two days, he will revive us; on the third day he will raise us up, that we may live before him.
Let us know; let us press on to know the LORD; his going out is sure as the dawn; he will come to us as the showers, as the spring rains that water the earth.