Good news! We think we found the issue. I would still double check with her that she is definitely using vt.teamdynamix.com to log in with, but we believe her username from your "VT Admin Sandbox" organization was the account given admin access instead of her account for the production "Virginia Tech" organization. This would definitely explain why the account she has been logging on with cannot see the Admin application.
We went ahead and made the adjustment to add access to the correct username from the "Virginia Tech" organization. You may take a look in your list of organization Admins and give her any further admin permissions you want to. She will need to sign out and then sign back in one more time, but this time the problem should be resolved.
We are also going to write up a ticket to add better clarification on the Add Admin page to use the user's TeamDynamix username when adding admins and not their Authentication Username. Had that been there, that might have prevented this scenario in the first place.
Let us know if this resolves the problem, or if any other issues pop up relating to this.