Leave her to it (The Cup and the Moon)
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From: The Cup and the Moon
She can deteriorate without you.
Unlocked with 
An Invitation for Respite in the Moon exactly 9
Success
Alone
She gives you a hurt look as you stand, but she musters her customary hauteur almost instantly [...]
You hear their laughter as you leave, a brittle sound without warmth [...] Perhaps this is what a Duchess does when [...] duty cannot be done. For you, [...] the work remains.
You shared a moment with the Last Duchess. (Sets 
An Invitation for Respite in the Moon to 10 - A moment's calm)
