Amended return affecting spouse

It looks like I was given EIC credit for a child that I specifically said I was not claiming. I have to amend my return, (I found most of what I need to do) but now the mother of my child is unable to file her taxes because it says her dependent was claimed, causing her to now owe a significant amount because of her withheld taxes. 

 

My question is since an amendment can take multiple months, what should my child's mother do? Will she have to file late once the IRS has received my amendment? 

 

I know this thread is swamped and I apologize for adding to that, im just soo confused and upset that I didnt triple check before I filed. Thank you in advance.