The daughter is.

She was intended by nature to be a dull young woman with a pretty face, but not content with that she puts on an absurdly skittish manner--oh, so ruthlessly bright--talks what she thinks is smart slang, poses continually, and wears clothes that would not be out of place at Ascot, but are a positive offence to the little grey town.

I hadn't realised how gruesome provincial smartness could be until I met Muriel Duff-Whalley." "Oh, poor Muriel!" Jean protested.

"You've done for her anyway.

But you're wrong in thinking her stupid.