@Duende@snouts.online possible that she attended multiple universities concurrently

Going through only universities that have engineering courses, if she went to Boston, USA she could attend 6 at the same time, then London for 5 at the same time, Paris for 4, and then Hong Kong for another 4 leaving it at minimum 16 years to attend 19 universities

Assuming all the exam times line up nicely and she knows English, French, and Chinese

That's just places where all of them are in the same city