Thank you so much @OldUser and @Dashinka! My due date is August 3, 2024. My mom left the US on July 8, 2023.
As @Dashinka mentioned, she can come back to the US even within July 8, 2024 to my due date? It would pass her one year mark of leaving the country. But she already has the reentry application. She gets so bored if coming here and has nothing to do, just waiting for the baby to be born lol :))
I am considering time to book a flight for her!
Thanks so much again for your time!