Lucien had to fly a mile away from Daisy for her to start calming down. For her, the problem is not that they have seen each other's bodies naked, but the fact that everything with him is fascinating and crazy, which makes her feel lively like never and wonder if she will be able to have a normal life alongside her husband after that.
[You can do this, Daisy!] She speaks to herself. [You are not a little girl anymore, and you can contain such feelings!! You don't want an exciting life with a devil but a peaceful life with a simple man...]
She tries to convince herself of those words while continuing to take a bath. But while she washes her body, she can't stop thinking about Lucien's naked body, especially his big member.
And when she realizes it, she's touching her most private part while that image is lived in her mind. Daisy gets so embarrassed, guilty, horny... That mix of chaotic feelings drives her crazy.