I'm very sorry for all that you've been through in your lifetime. I hadn't ever heard of the Nexalin but looked it up. I also couldn't find any references in older posts here about it. There would be older posts regarding neurofeedback though. You could check with the forum search feature if you wanted. You can check forum wide or you can just check specific places e.g. depression or PTSD forums.

http://neurotalk.psychcentral.com/search.php

There is a Therapist Finder link at PsychCentral that I'll post below.I understand that finding the right person must be difficult. I'm not sure what else to suggest right now as you have already tried so many options, but I sure do hope you can get some long term peace from the pain of the past as soon as possible. Take care there.

http://psychcentral.com/find-help/