can you move the star over at all? you must cover that area with something if not.

If you have just a small piece of the background fabric, spray baste it and nestle it under the rip so that it adheres to the top piece - don't do trimming.Just make sure that the edges of the rip lie flatly along side each other. Once you have quilted it no one will ever know unless you point it out (believe me).

Crossing my fingers and toes for you, the plan sounds like it will work.