How do I present evidence that says my disability is not to be attached by any third-party per title 38?

I am a 100% disabled veteran. I pay my daughter's mother $109 per month from my VA benefits. The mother wants to attach, raise support and use my disability benefits as income. I have been told and have read titled 38 that say my disability shall not be attached by any third party. We live in New Jersey but enforcement is out of Pennsylvania and Pennsylvania is considering my benefits income. There are huge issues between the mother and I. She was an illegal immigrant who I did not want to marry. She disappeared for two years. I sued for DNA and she put me on child support.