Ps 150

Help! DH's aunt is going to be attending a craft/quilt fair soon and she had finished 3 quilt tops to sell but doesn't have time to quilt them before the fair since she's gone back to school so she asked me to quilt the tops for her. She had already sandwiched 2 of the tops but since they had been folded for so long, they needed to be pressed and resandwiched. So, I unrolled one and there was a terrible snag in the border of one of the quilts. She said she knew about it (thought it was probably from leaving the pins in for so long) and wondered if I could quilt it in such a way that it was unnoticeable. Any thoughts on how to do this? It's not a straight line snag so I can't do echo quilting around the edges.

On either side of the snag is a hard, raised bumpy line that's the main problem. She thought I could kind of quilt over top of it so it wasn't so noticeable but I really am unsure of what design to use or how to do it. My first thought was the echo quilting but it's not thoroughly straight so it wouldn't completely cover that bump.