Dyestat is actually a better resource as you can sort times by:
1)Indoor or Outdoor (ie. 55m, 60m, 200m Indoor or 100m, 200m Outdoor)
3) Class (ie. Fresh, Soph, Junior, Senior)
4) Combine & sort for the top Junior Times in a particular state
If the time your niece has run was indeed a wind legal time, she is among the fastest 11th graders/Juniors in the nation....definitely top 5-10. If she's that good I'm sure LSU and any other top track team would be interested.
Simply access the link and scroll to the bottom of the page as the Boys times are listed on the top 1/2 of the page. Top Junior/11th Grade 100m Times in the Nation