Reddit mentions of Rachel's Tears: 10th Anniversary Edition: The Spiritual Journey of Columbine Martyr Rachel Scott

Daniel Mauser hit me particularly hard, especially when I learned he was a friend/acquaintance of Devon Adams and he was affectionately called "Moose" by the members of the debate club. It was easy to tell just how loved he was in his family, particularly where his father is concerned.

Also, I'm not sure if you're looking for specific Columbine documentaries/material (e.g. about the victims, etc), but I've personally read and enjoyed No Easy Answers by Brooks Brown, A Mother's Reckoning by Sue Klebold, and Columbine: A True Crime Story by Jeff Kass. I haven't read any of the books about the victims written by their families, but I know there's two about Cassie and Rachel. Whatever you do, just don't read Columbine by Dave Cullen.

I've only read bits and pieces of the 11k, so I can't say for sure, but I haven't encountered much of Kelly Fleming at all in the reports. She was probably referenced by library witnesses and by police officers describing where she was shot, where her body was found, in what position, etc, but I can't imagine they'd include much else, since it's not really relevant.