Eh. I find this inconsistent with her previous characterization. She's no Einstein, but she's not significantly dumber than average either.
I guess she just got the idiot ball this time around (or even two of them in the second panel ). I hope Giz uses the situation well, or it'd be particularly jarring.
Speaking of, is it just me or are DiDi's assets significantly smaller here than in other panels? Amber's seem almost bigger than her.