My mom bought DS one of these chairs for his 1st birthday and he LOVES it!!!

We recently moved and somehow the stitching on the J of his name got snagged. I didn't notice it at first but I caught DS pulling the string and now 1/2 of the J is gone.

Does anyone know where I could get this fixed and how much it may cost? Or would it just be easier/better to order a new personalized cover for the chair?