Has anyone heard of GABA for difficult child kids? My daughter is 5, has LOTS of defiance and aggression. As yet we still cannot find anyone in our rural area willing to deal with her until she turns six. Her brother, nine years old with ADHD and social skills problems, is decompensating because of having to deal with her all the time. The whole family is hostage to her behavior. I'm willing to try GABA or other supplements but don't want to cause harm. Any input will be welcome. THANK YOU.