Give your friend
Church History in Plain Langauge by Bruce Shelley.
Here is the Amazon link:
amazon.com/Church-History-Plain-Language-Updated/dp/0849938619
This is a history of the church by a respected Protestant professor from Denver Theological Seminary.
Shh! Don’t tell your friend this, but this book was one of the things that convinced me to leave the evangelical Protestant church and become Catholic! I sat in a Catholic Apologetics/History class with this book open on my lap, and it never once contradicted the teacher of the class.
The book makes it very clear that the first church was “Catholic.”
The book gives an excellent description of the Early Church Fathers and also discusses the early heresies.
In the chapters about the Reformation, the author is a little “glowing” about how necessary the Reformation was. But I would not call him anti-Catholic at all.
His chapters about all the divisions in the Protestant church are extremely useful.
The book is easy to read and understand. The language is not high and mighty.
Another book you can offer her is
Being the Body by Charles Colson. Here is the link:
amazon.com/Being-Body-Colson-Charles/dp/0849945089
This is another book that convinced me to become Catholic. (Shh! Don’t tell your friend that!)
It isn’t a history. It’s an argument why the Christian churches need to work together to fight evil. Chuck Colson argues beautifully in favor of the true Christianity of the Catholic Church. (He’s a Baptist.) I thought the chapter where he describes how he became convinced of the good of the Sign of the Cross was very touching. He also makes a convincing case of how Pope John Paul II, along with Ronald Reagan, Lech Walensa, and several other faith-filled people, brought about the downfall of Communism in Europe. A great read for Catholics and Protestants.