[ She raises a questioning eyebrow when he says 'brain damage', but otherwise doesn't have much reaction. She'd thought perhaps Siffrin had brain damage, what with their memory problems. She's not sure how she knows that's not the case...

Anyway, Stanley's brain damage doesn't seem to be a large issue, just an inconvenient one. ]

I see. Yes, the two are probably related. It's possible the web isn't discerning when it seeks out memories. It may not be a conscious intention.