I couldn't tell if the quilt eating dog had eaten through the quilt or if the backing is still intact; if it is, I would try to find a solid pink to match as well as possible. Then I would cut away the existing batting, whip stitch a new piece of batting and then applique a new pink strip over the existing sashing, then quilt over that and that should solve the problem. I also am glad that the appliques did not get eaten, that would have been tragic.