A Request for a Friend

I need your help. I have a friend who's looking for a book (or books) that can help her minister to someone she loves deeply. This person feels that GOD does not love them, and of course my sweet friend knows he's love by our Lord. So help me out please. I don't want to go into too many details, but suffice it to say hard childhood, adulthood challenges, someone that you are supposed to be able to love and trust because of who they are in your life and the fact that they're in the ministry and did the exact opposite. This is an ADULT, which is important, and this person needs to know how loved they are by GOD and that GOD has not and will never turn their back on them. I know these books are out there, but I'm honestly drawing a blank right now. (Christian based obviously)

Thank you (just leave your suggestion in the comments section and if you will ask others if you don't have a suggestion and ask them to send me the name of the book and author that'd truly be appreciated!)