I asked awhile back if romancing early/later mattered and was told it didn't. Today I got my Althea to 60.. and her stats don't match the lvl 60 althea on the wiki.
Mine =
New Upcoming Game: Crystal Maidens-althea.png

Wiki - https://vignette.wikia.nocookie.net/...20171215045010

As you can see mine has roughly half the total attack. I don't have my skill leveled to max yet, but as far as I'm aware that doesn't effect the stats?