I was also brought up in a Christian cult, and have struggled with my faith and PTSD. In my church growing up, most mental illnesses were treated as some form of demonic possession/influence. They went straight to the spiritual fixes for physical issues, then blamed the "ill" one when nothing changed, as if they didn't have enough faith or "gasp!" didn't want the demon gone!! Right now I stay away completely from most Christian discussions, since the topic triggers me so badly, but having spent over 30 years intensely studying Scripture for myself (was being groomed for full-time ministry in that cult since i was born), I believe I'm solid enough in my own personal relationship with Jesus that He understands my need to step away for a bit, figure things out, and heal. I've studied Judaism for quite some time now (ethnic heritage, thanks to my dad) and consider myself more a Messianic Jew than anything else. That makes for some interesting discussions in BOTH camps!
My best friend is Jewish, I hang out more with traditional Jews, I also have a FEW friends who are Christian (the non-pushy kinds only, though!), and my therapist is Buddhist. At this point, accepting people as they are and letting them figure things out on their own is the best advice I can give. That, and stay away from the religious, stupid, negative, ignorant Christians, or anyone else for that matter...healing needs to be helped along, not hindered.