Aeinshia continued to blame her rude and unreasonable behavior towards her maid. Aeinshia wasn't even facing Shirley. The only thing visible was her side profile, which gave a clear picture of her clenched jaw.
When, Shirley didn't get any response from Aeinshia, she decided it was best for her to leave her chambers now. An angered wolf shouldn't be moved much. Shirley has a lot of experience with this statement.
But, obviously, she didn't want to leave without letting the princess guilt trip because of her behavior towards her. Of course, this is a chance to show her charms in acting and how can she let the opportunity which came knocking on to her door go to naught. She could only use it to the fullest.
Shirley knows how to use the situations to her advantage and probably, flip it to her own advantage. But, when she couldn't do anything about it, she still somehow finds a way to instill a thought in others mind.