Those are decent arguments.
But some human girls hunt their food off of others' plates too. Sneakiness probably helps.

Nothing changed between yesterday and today, and yesterday they got a pretty good idea of how it works. There used to be part of the collar that could have interfered with this process, but it has already been taken care of years ago.

The collar is removed!
All that's left to completely remove any trace of it is a surgical procedure to remove the implant. But, even without removing that, it's still fine because it shouldn't really matter after this week is over, anyway.

Marin bites her lip and still doesn't move, just in case there's anything else. No more moving until she is told she can.