I believe the story you're looking for is "A Simple Legacy" by Elle6778
Her Author's page is here:
sesskag.dokuga.com/fanficstories.php?aid=4516
or here:
dokuga.com/component/comprofiler/viewprofile?user=2531
The part you described happens in part II of III
Part I:
sesskag.dokuga.com/fanficread.php?fid=5693&cid=1
Part II&III:
sesskag.dokuga.com/fanficread.php?fid=5823&cid=1
Simply Hard (Side story from a chapter in Part I):
sesskag.dokuga.com/fanficread.php?fid=5797&cid=1
Hope that helps! I knew I knew this story, I just happened to be reading it today about the barriers and I remembered someone was looking for it...