Astoria was quickly silenced by her mother’s hand. "Astoria, did I not mention to keep this a secret. Now, be a dear and continue to annoy your sister. You have my approval till the ball starts." She quickly patted Astoria on the shoulder like a doting mother. The sincerity of Lady Greengrass showed how much she cared for her daughter, one that I can tell carried towards  Daphne. Sort of. The fact that she was sicking Astoria on Daphne to distract her proved my initial thought. Daphne probably had no idea I was here and this was all setup by her mother.