I bought 2 signed vinyls and 1 signed cd from her store, and JSA didn't say they were fake, but did say they were unable to confirm authenticity on all 3.
I was thinking it's possible that they found it unable to authenticate because it's just a 3-letter abbreviation that would be easy to fake. But they have authenticated other items that were just initials, so I honestly don't know what to think about these.