Dear Mr. Cooper,
Thank you for posting your request on History Hub!
If your mother received information about his awards and you are waiting to hear from the individual military branch, then please review the information provided on NARA’s web page titled How Do I Request Military Awards and Decorations? for the mailing addresses of the individual military branches.
We hope this is helpful.
If she was also given a tracking number from the awards branch you can check on it using this website. When you get to the site click on the upper right-hand column listed "Check Status" you will need the tracking number from the paperwork that was sent to you showing who would be filing your request. Mind you without knowing your grandpas military affiliation or branch of service I'm only providing information for Army. I do not have any additional information on other branches.
Hope this helps,