On Monday (Labor Day), my DL MEX-ATL flight returned to MEX after ~40 minutes in the air due to a 6-month pregnant lady vomiting with shortness of breath and chest pains. She was sitting in the 2nd row of Y with her young daughter. The plane turned around about 10 minutes before the pilot made the announcement.

The FAs made a call for a doctor soon after departure, and one man assisted. He gave her a sedative of some sort.

I would much rather get to a US hospital than return to a MEX hospital, especially considering the woman was a resident of ATL. Her husband was still in MEX, though.

All of the FAs presented the doctor a bottle of wine and said that, "DL would send something".

After about 30 minutes of refueling, completing paperwork, and refilling the first-aid kit, we took off again and were only 3 hours late.