Dear Jansy,
I am surprised that you think no one has pointed out the Lucette-Blanche connection. I wrote about it in 1978, and published the material in Nabokov's ADA 1985 and 2001 (where the discussion occupies pp. 152-55), in the Afternotes to I.7 and I.19 in The Nabokovian, and now in ADAonline (where it can also be followed in many other local references, and via the Motif index, through the Cinderella motif, the peat, bog motif, the slipper motif, and so on), and in "Ada, The Bog and the Garden," Nabokov Studies 8 (2004), where pp. 116-33 discuss Lucette and Blanche.
Brian Boyd
From: Jansy Berndt de Souza Mello