[ He really shouldn't. When that's the sight she sees upon opening her eyes it only serves to flare her annoyance. ]

Of course you shouldn't have been disappointed –

[ Hilda catches herself, shutting her mouth so hard that her teeth click together. She chews on the inside of her cheek before letting out a heavy breath through her nose. ]

Not being disappointed means that you've thought about it and you shouldn't have. We shouldn't have.