I looked into it more and decided on some Vietnamese middle names I like!
I think I am steering towards the following….
Evelyn Quý Ngo (Quý means "precious", pronounced "Qwee")
or
Evelyn Hoa Ngo (Hoa means flower, pronounced like "Wah" but add a hard H sound before. Huy (my husband) personally likes this one)
Ariadne Liên Ngo (Liên means Lotus, pronounced sort of like "Lane" and "Lynn" put together. But theres some strange inflection in there that is hard to describe… "Lane" is closer though)
Desmond Dễ Ngo (Dễ means "royal" and is pronounced like "say" but with a Z sound in place of the S.)