Sosie

• sosie: (French) twin → Issy's two personalities → the zodiacal sign Gemini?

• so sie: (German) so she → so sie ses... = "so she says"

• Susie: Susanna, a young woman in the book of Daniel; like Swift's Stella & Vanessa, she was the subject of older men's advances
  • Third Census of Finnegans Wake

• saucy: arousing sexual desire; lascivious