Actually, I'd say Ruby is the "star witness" at this point.
She came off as a nut job and not very credible. Nothing needs to be added other than watching her talk to form that opinion. Nobody should be getting death threats though.
I'm more interested in her sworn affidavit than a mainstream narrative.
Beyond that however, I'm less inclined to take your word on who comes off as credible after you argued in favor of Rachel Jeantel's value as a witness.
