pascha – Yes, I think that is more the xian view: I think the whole idea of “burning” and G-d wroughting His wrath on humankind is DEFINITELY very xian. Hashem loves us, and His punishments are not REVENGE but rather a process for US to become better and closer to Him. At the end of the day, Hashem wants us to have the closest, cleanest, relationship with Him in Gan Eden, and He makes us go through the process of peeling off our layers to truly cleanse ourselves from within and without.
I hope this helps and will B”N try to find you a source. I do agree with d a that you should try to find a rav for her to speak with. There are many who are experienced with answering people’s questions, and it is worthwhile to speak to one – not just so she can find her answers, but also so that you have a strong backbone to help your friend in general.