Who is The Siamese, from from The Sandman and what is their importance?

The Siamese begins life as a house cat. She is a purebred Siamese, but one night when she is in heat, she has sex with an orange tomcat. She admires the tomcat's strength and power. Afterward, the Siamese gives birth to a litter of kittens. She is devastated when her human owners drown the kittens. The Siamese wants to understand why she is powerless. Like Calliope, the Siamese is being kept for another's benefit, and she seems to have no options to save herself.