I don't know what the rest of the design of your quilt is, and from the picture I can't really tell how much of the black fabric is ripped. I have a quilting friend who seems to have this problem from time to time. She has gotten to be an expert at mending by adding an applique right over the rip. She commonly uses stars, but her most creative was a lightning bolt that started a few inches from the edge of the quilt and wrapped around to the back side. It added a very nice design touch and did the job!
Good luck with your challenge!
Dayle