Thanks you for your reply Husse.
I found some help from clem and Pulpie on IRC
The problem was that, back when Daryna Main edition was released, there were no translations yet for the mint tools.
So, i had to enable the Romeo repository to get the latest version (2.0)
Now the whole thing is in french.
I hope this will be useful to anyone who has the same problem.
Another great example of the Linux Mint's community kindness and efficiency