It looks like a great game and one to add to the wish for list.
Someone else might tell you more specifics but a lot of what is translated is not up to those at Peach Princess. In the past people have also posted requests and it has been said that sadly it is still mostly up to what the Japanese creators or production companies of these games are willing to “give” for translation.
If you really want this game translated it couldn’t hurt to contact the makers of the game, both online and maybe through a paper letter and get a lot of friends who also want the game to write in the same request, asking this company if they would consider letting this game come up for translation. You can even mention you know companies over here that already sell translated games.
It might not do anything, but it is one way to try if you truly want this game translated.