Which mourning character does the second narrator visit in europe at the end of conrad’s 1902 novella?

In Joseph Conrad’s novella “Heart of Darkness” in 1899. The main character –Marlow- after finishing his long voyage in Congo and returning to Europe. He feels awkward and not so familiarized with civilization so that he decided to call and meet the people Kurtz’s paper were addressed to.  For this reason, he left with a number of personal letters and a photograph of Kurtz's fiancée, whom he referred to as "My Intended". There, he encountered with a woman in mourning, dressed in black due to Kurtz’s death. Although he had passed away more than a year ago, she kept her mourning and begged Marlow to tell her his last words. Compelling Marlow to lie and said his lasts words were: her name.

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