The $140K estimate sounds a bit on the high side. I think you could definitely cut down on some cost if you plan to have a roommate and find a place on the free Emory shuttle routes!
From what I've heard, they are still sending out some aid (you could potentially get REAL, which is a work-study program overseen by Rollins). Don't forget that you can also get a part time job too after the 1st semester to help. If debt is the most important thing to you, then the $140K is a steep price for an MPH, but that might depend on what you want to do. If you really want to live and work in the US after, maybe it is worth it if potential jobs for your concentration is above a certain threshold. Definitely reach out to the financial aid office and ask if they can consider you for more and ask what their process is if students with scholarships decline their offers/if you can be considered for more!