She’s not a shrinking flower

This is a nice congruent conflation of “shrinking violet” and “wallflower”, both describing someone who is shy.  The confusion is obvious: violets are flowers.  The speaker (who was me by the way) may have also been mixing shrinking with stinking.  The local conservatory, the Phipps, has a corpse flower, which emits a smell akin to rotting flesh when it blooms, and the day I uttered this malaphor the flower had bloomed and there was a great deal of news about it.