The so-called "start list" you posted is from the afternoon of May 1st. The time and date says "4:36 PM 5/1/2025."
But the meet at issue - the 2025 Larry Ellis Invitational - took place on the afternoon and evening of May 2 and the late morning and afternoon of May 3.
The track running races were held on Saturday May 3.
So rather than a "start list," that document appears to be a list of athletes who registered online prior to the deadline (4/28/25 @ 12PM EST) and had their entries accepted.
Also, the May 1st list you posted shows that Sadie Schreiner was registered to run the women's 100 meter dash as well as the women's 200 at the LEI. Schreiner is number 31 on the women's 100 meter list dated May 1.
Confusingly, the May 1st list you posted was published under a misleading heading which called it the meet's "Performance List." The top of every page says:
Larry Ellis Invitational - 5/2/2025 to 5/3/2025
Princeton University
Perfomance List
But the official lists stating which athletes actually competed and how well they performed in the heats and the final races at the 2025 Larry Ellis Invitational were published in an entirely separate document posted online by Leone Timing - the meet's official timekeeper, and one of the defendants in Schreiner's lawsuit - which can be found here:
Sadie Schreiner's name does not appear in any of Leone Timing's published lists of official race results for any of the women's 200 or the women's 100 heats or finals that actually took place at the Larry Ellis Invitational at Princeton University on May 3. So if Schreiner did compete in one of those races, it wasn't under the name "Sadie Schreiner."
The Leone Timing results for women's 200 and 100 races actually run at the 2025 LEI also do not show an athlete with any of the other names Schreiner is known to have competed under previously (Camden Schreiner, Rose Schreiner, Sadie Rose Schreiner).