Princess Dragomiroff is wealthy, elderly Russian woman who now resides in France. The other passengers remark on her ugliness, but also her strength of will and self-possession. An expensive handkerchief is planted in Ratchett’s compartment in order to strategically draw suspicion to her, as her frailty makes her an unlikely murderer. Princess Dragomiroff was the godmother of Sonia Armstrong, Daisy’s mother.