That is why I said might because we dont know how old Maria is.
Then there is the fact though the huntsmen were set up 80 years ago it takes time for a system especially like the one Huntsmen are to get setup and for it to replace whatever system was in place before huntsmen and there should be something even if its local levels.
So for the first 10 to 20 years of that 80 Huntsmen would be the minority taking over the majority of grimm hunting. And that range Maria does look solidly to be in.
So she might be that local level of grimm slaying that either got pushed out or adopted into Huntsmen.
She might also be an early Huntsmen and having to deal with what was compared to what is. And being old enough to know both systems.
I have seen when new ways conflict with traditional roles and ways and its not pretty.
Though to be honest this is idle thoughts I dont think RT is going to give it too much details as I think the SE angle is going to be the driving force