My position is that no. At least, the woman that testified is not the same woman in the previous pictures we've seen. This is an actor hired to portray a part in a scripted play.
Mid to late 60s at the youngest. I'd buy mom, or an aunt that she resembles. I'm their age, we don't look that old yet, even after a hard life of heavy partying.
Well, given that the woman that showed up is likely between 60 and 70 and probably doesn't have a PhD in anything… yeah, she might talk like a 12-year old.
I'd buy that, too.