My 2 year old somehow discovered a ballpoint pen in the living room and proceeded to scribble a 2-3 inch area on our new H&M Journey sofa. The leather is Document Copper, and the scribbles were done today sometime. What is the best way to remove the pen? I've looked on the web and find people have used rubbing alcohol, hair spray, and even Krud Kutter Graffiti Remover with varying degrees of success...but I'm terrified to try any of these and risk discoloration or damage to the leather. Any ideas??

Thanks!