He would assume correctly; Alice had tensed from the initial display of affection, sinking her shoulders as soon as she's freed. It's her way of saying "thank you", since words seem to be lost on Alice at the moment. It's bedtime for Alice, who is dead on her feet, that she reluctantly staggers towards the stairs. She was going to say something else to him, perhaps a "goodnight" or verbalize her gratitude.

There is silence.

Alice just turning to him, as her dark hair falls into her face.

Unfortunately, Alice will not be coming out of her room for a few days after this.