Your friend saw this resource on bethinking.org and thought you should see it:
Evil and God: Reflections of a Former Atheist
The existence of evil seems to challenge the idea of an all-powerful God of love. Here is one person's account of grappling with this question.
See the full resource online by visiting bethinking.org:
https://www.bethinking.org/would-a-good-god-allow-suffering/evil-and-god-reflections-of-a-former-atheist
---
bethinking.org is a collection of resources which aims to make sense of the big questions of life about God, Jesus and Christianity.