So, y’all know Billy Strings, right? The bluegrass whiz kid who can shred a guitar faster than I burn toast in the morning. But… who’s the billy strings wife? I’ll admit, I didn’t know much either until I started digging in. Turns out, the woman behind Billy’s music is just as interesting as the man himself. Anyway, here’s the kicker — this article’s all about Sarah Stringfield, the billy strings wife, who’s quietly been the rock behind Billy’s whirlwind success.…