Hi! I've found a workaround for the bug with .langauge files - you can just make your own .language file somewhere in your mod's folder, and put UA there instead of string. So, for example, this works:
{
"UA": {
"ITEM_MYSTICSITEMS_HEALORBONBARREL_NAME": "Your translated Donut"
}
}
As for whether you want it added to my mod or if you want to keep it all in your mod - that's up to you!
Oh, and, you're welcome for the font! Always glad to help with localization issues that developers don't want to solve for some reason.