No, the IRS does not have a section on their website for accepted extension requests.
Someone has filed a tax return with her Social Security number and Name, so it very well could be the accountant. Can you call and find out?
If there are no taxes owed or there is a tax refund on the 2024 tax return, there is no reason to file an extension since there are no penalties for filing after the due date if there are no taxes owed.
If taxes are owed, you can get an automatic extension from the IRS if you make an extension payment on the IRS website for Direct Pay on or before the due date of the federal tax return - https://directpay.irs.gov/directpay/payment?execution=e1s1