No, they were never rough, although when they were white, it almost looked like that area was indented a bit...
When she first shed, revealing the "white", her shed looked like it had actual scales in it...
Carmen's scars are 18 months old and if you are stroking her and not looking, you can't really tell where they are.
Here's my original posting when I discovered her scars =(. Sorry the pictures are gone: http://ball-pythons.net/forums/showthread.php?t=33281&