I can't agree with your advice, Izzy:
Your International Medical School Graduate (IMG) Plastic surgeon is quite an exception at $5 million annual income. The national average income for plastic/reconstructive/cosmetic surgeons is closer to $400 K, with the highest reported income in a recent survey around $800 K.

IMG's are at a significant disadvantage in finding a residency program in the U.S. It is unfair, discriminatory, etc. But studies published as recently as last year indicate that the discrimination exists and an IMG is going to have a harder time than a U.S.graduate. I won't argue with you about your statement that "medical school is the same everywhere".. I haven't seen the data one way or another on that. BUT, the perception that IMG are inferior to U.S. programs HAS made it an uphill slog for international graduates.

Finaly, ... COST: Students of foreign medical schools graduate with higher average debt, $235,000 compared to the average $158,000 owed by graduates of U.S. medical schools, according to an August report to Congress by regulators.

If there is any way for the OP's child to go to a U.S. Medical School rather than an offshore one, I think she should.