Ditchwater Sal is a witch and a member of the coven of the Lillim witches. She is a minor antagonist in the 2007 movie Stardust, being the captor of princess Una for many decades.

She is portrayed by Melanie Hill.

In the movie

At some moment Sal took the princess Una captive and used her as a slave ever since.

While on the road she meets Lamia which she does not recognize. Semelle mixes Limbus grass in Lamias food, forcing her to tell Sal of her plans to recover the heart of the fallen star. Upon realizing, Lamia furiously asks Sal if she has any idea who Lamia is. Realizing that Lamia is the Dark Witch Queen she begs for mercy, promising not to seek the star. Outraged, Lamia puts a spell on Sal which prevents her from realizing the presence oft he star: Sal will not be able to hear, see, smell or touch Yvaine even if she stands right in front of her.

On the way to the wall, Tristan and Yvaine see Sal’s carriage coming closer. Because she saw her with Shakespeare, Yvaine falsely assumes that Sal is a friend of the captain and tells Tristan so. They stop Sal’s carriage to ask her to give them a ride.

Due to Lamia’s spell she only sees Tristan and does not respond to Yvaine at all. After first trying to get the flower  (which Una sold to Tristans father) back by orce she is then stopped by Tristan’s drawn sword. When Tristan tells her that he will give back the flower in return for safe passage to Wall, Sal agrees and promises to deliver Tristan completely unharmed. After he gives her the flower she states that he clearly has no idea how valuably the flower is, being a charm that forbids witches to use magic on the one who wears it. She then turns Tristan into a squirrel and loads him in a cage. Yvaine enters the carriage unseen. After arriving at Wall, she turns Tristan back into a human and leaves him. Later, she is trapped into her own carriage when her slave Una drives the carriage to the wall to  stop Yvaine from certain death. When they arrive at the wall Sal furiously storms out oft he carriage to see Una and Lamia. Lamia recognizes Yvaine as the fallen star and speaks this out loudly. Sal, who cannot see Yvaine does not understand and asks Lamia if she meens Una. She assures Lamia that Una is not a star, telling the witch to trust her, stating that she would have killed Una long ago if she were a star. Remebering the last meeting Lamia states that she would be a fool to trust Sal again and attacks her, blasting Sal’s head of with her magic and thereby killing her.