Possible Clues:

• '. . . . . . . . . and pound foolish'
• ''. . . . . . . . . and pound foolish''
• "It" baddie
• Shrewd as Dekker's copper?
• '. . . . . . . . ., pound foolish'
• Small girl is sensible to be frugal
• Absurdly thrifty
• Has Penelope learned to deal only with a little coin?
• She may have brains, but gets confronted if it's pounded, perhaps
• Mean to be as learned as the girl, it seems