Going to take a guess and say that the elevator button she wears as a necklace allows her to bypass anomalies.

Scavenger-chan mistook Mask for Bottle from when the later escaped through a trash chute. An understandable mistake, since the Giant Otters are clones.

Would it be interesting if the twist was that this is the Anomalous Giant Otter backstory?

FlameKat said:

Would it be interesting if the twist was that this is the Anomalous Giant Otter backstory?

First thought the moment I saw red text

ElMariachi said:

Scavenger-chan mistook Mask for Bottle from when the later escaped through a trash chute. An understandable mistake, since the Giant Otters are clones.

Well you'll have to forgive her for confusing the two since she also has Bottle's "bottle".