This preface to the story occurs from Daniel's perspective, and it packs a wallop.
Immediately, we find out that Daniel knows he's in love with the nameless girl he's drawing (we can assume she is Luce, though we never know her name)—and that he has been in love with her for generations—and that every time they get close enough to each other, something terrible happens to her.
Dun, dun, dun.
The 1700s version of Luce is just beginning to piece everything together for herself, mentioning that she knows Daniel is familiar even if she can't figure out why. Then the two share a passionate kiss, right before Luce disappears right in front of Daniel.
The worst part is that Daniel knew it would happen, because it always does.