i have to vote Milla as that's our number 1 girls name if we are so blessed. We have already decided she would be Milla Jean (jean is dh's nan's name).

I really like Mya as well tho but pronouncication is a bit of an issue (probably the case for milla too).

Milla Ruby
Mya Ruby

hmmm I'm not sure if i like Ruby as a 2nd name with these but i do like the name Ruby very much.

You said you like a bit retro/old fashionned.. what about Betty? or Meg? but probably not as 2nd names with Milla or Mya i suppose.

gee not sure if that really helped you at all lol but good luck!