To add more fun to this confusion, isn't that child supposed to be Dana?
Well, atleast that's what I could gather from the Sentinels movie (and IIRC, from Robotech as well!)
What's the point? Dana is how is called the max and Milia doughter in robotech, but they didn't translate the title in Viva Dana, probably they got confused (idots...) and thought it was Miria or they just thinked it was better.
M&M doughter is Komilia Maria Fallyna Jenius, and that episode is named after her.
THinking about it, probably Keith is right but "Millia" is how it was spelled in the original SDF Macross show.
ps
About Miria on the Yamato Product, didn't they misplelled Guld before too?
You maybe right. There might not be any point.
I just thought I'd like to point it out