Is your Rilla-my-rilla named for the central character in 'Rilla of Ingleside' by L. M. Montgomery? I love that series...
Hee hee, yup it kind of is. She is named Amarilla (yellow in Spanish) which quickly got shortened to Rilla, and affectionately, called Rilla-my-rilla. Yes, this stemmed from Rilla of Ingleside, as I Love that series also. I have over 30 of L.M.Montgomery books, as she was my favorite author in my teen years.