Tf you mean, you never heard of disaster diplomacy? It's normal and moral for countries to help each other through hard times.

Plus, sovereignty doesn't mean shit to an impoverished country with lives on the line.

I actually disagree, I think there should be some sense of international obligation to help countries recover from natural disasters.

Unfortunately, the Global South (China, India, etc.) can't really get too involved in Mexico because of the Monroe Doctrine and the US is preoccupied with Palestine/Ukraine.