How did Sue get in the Reservoir?

Kanpachi says about Sue that: "we found her washed up right here in the reservoir". Any ideas how she got there? Via Waterway? Did the Doctor flushed her down the toilet? Ideas?

 

I dunno. Maybe Sue was turned into a Mimiga in the room with Core along with Itoh, snuck away, went to the Waterway, then got flushed into the Reservoir

 

Well, she was either tossed by Misery or the doc.

 

Kanpachi just attracts the ladies like that. It's a logical place for her to end up if Kanpachi's there.

 

Sue got Kanpachi pole'd