Hello Laura H,
Let's work together to get these transactions to show in the Audit Trail report.
The Audit Trail report should show all the transactions done by other users. It'll only exclude transactions in the report if you have customized this or if you've memorized it.
You can open the report and check the current filter choices. You can see this by clicking Customize Report at the top of the report and going to the Filters tab.
Let me know if this helps you show the transactions completed by the other user.