They might decide that it wasn’t worth the drive back to retrieve me; that, like Quixote the cat, I was a bother and a burden they could do without. Jeanette pg. 30
This is an allusion to pg. 18, when Quixote the cat was thrown out of the car because it was an unnecessary burden on the family. Jeanette has just fallen out of the car so shes made the connection that like the cat, she’s no longer wanted.