Custom Libraries for Quest

I’ve been trying to make a text adventure on Quest, but I’m stuck making a system for stomach capacity (aka stuffing) and fat, due to how the engine handles counters. I keep breaking the descriptions or counters.
Has someone gone through the bother of making extra libraries for this kinda situation? Any suggested must-haves, even if they are unrelated?
If anyone experienced with the engine would provide tips on how they pulled it off, that would be greatly appreciated as well. It’s an issue that I cannot wrap my head around.