Books with title Wobble, the witch cat

Cocoa the Witch Cat is a story about a very special cat that lives with a witch named Melinda in a vine-covered cottage in a forest. One of Cocoa's jobs is to help Melinda get the special ingredients she needs to cast her spells; Cocoa also helps Melinda with her magic, especially for her very special spells, which sometimes can only be cast when the moon is full. Cocoa helps by wearing a magic witch cat hat and doing a tricky dance as Melinda says her incantations, especially on Halloween, when everything must be just right. Melinda loves and treasures Cocoa, as Cocoa does Melinda, and she rewards Cocoa by giving her a nice big piece of freshly caught fish and a big saucer of warm butter milk, after which Cocoa will sleep by the fireplace, by a nice warm fire on a pillow filled with goose feathers and dream.