Where did I go wrong?

I was really excited to share my "find" in the garden yesterday. 

When I showed the 16 year old this, a surreal conversation followed. . .
Me- Look at this.
16- Ooh berries!
Me-Technically, yes; but what KIND of berries?
16- Uh, raspberries?
Me- Really!?! No.
16- Tomatoes? Not blackberries. . . Strawberries? ? ?

As I was shaking my head in disbelief, several thoughts ran through my mind in rapid succession; how can someone from California (Paso Robles, no less! ) not recognize a grape vine? I know she's raided my mother's vines in the not so distant past, how will she survive without any long term memory? Are all of my grandmothers turning in their graves? Maybe is it just the grandmother who was a certified master gardener that will haunt me for my failure to properly educate my children? 

This child used to be so much smarter! What happened?