If you are looking for in-depth daily devotionals, I suggest My Utmost for His Highest and Experiencing God Day by Day. Both of these may be found on line each day. It's likely you will be able to purchase them at your local Christian book store as well.

Many women have grown in their relationship with Christ as they have read the daily devotionals and articles found in Journey magazine. Your church may provide these for you. If not, you may purchase Journey at the web address shown below. It makes a great gift of encouragement for your friends.

My Utmost for His Highest by Oswald Chambers
http://www.myutmost.org

Experiencing God Day by Day by Henry Blackaby
http://www.blackaby.org

Journey magazine
http://www.lifeway.com/article/?id=169846&CID=RDR-Journey