Yes, but her memory isn't working well and she likely knew Lucius from a very young age. After all, both were from Noble Houses which were in the pureblood faction. At minimum they would have known each other since Hogwarts.
Narcissa's house isn't 100% in the pure-blood faction, but that's a minor detail.
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapter 120.
Plans for next chapter release:
There is a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)