From Tempted Angels:

Meru has always dreamed of getting married, just like many other witches like her. She's to marry the werewolf, Riku, the upcoming night, but on their wedding day, their wedding is crashed by a hungry bystander, Rurupon! Rurupon runs off with Meru's veil, and she chases after him, only to walk into the middle of a curse Rurupon's master is causing! Meru is now a little girl, and with no way to change back, she can't get married! How will she ever return to her regular form and proceed with her wedding?

From Forbidden Garden:
The fiance of the witch Meru is a sexy and wild werewolf?!

The witch Meru and her werewolf fiance, Riku, should have been married...but on the day of the wedding disaster strikes! A spell that the magician Nazo was casting accidentally hit Meru and she transformed into a little kid!! The only one who can return her back to normal is the one who cast the spell and Nazo has quickly escaped. What happens to Riku on the quest to find the missing magician? And how does their love stretch with Meru stuck in a little girls body? Will things ever go right for this unlikely pair??