After you file

What does it mean when u do get a letter from the irs last year my girl claimed our kids and this year I did but now I’m stuck in the process wait and I did it and got accepted on 1/27. Idk how to read the transcript but I see March 9th in it is hoping to good that not when I’m getting it but everyone said there just making sure that my girl didn’t claim them bc she got hers