"It'll be enough if it's shiny," she whispers back- and as Herbert slinks about, she hurriedly hisses-

"There!" As soon as Herbert has her above such a dish, she quietly lets herself down-

And with her razor sharp teeth, slits a small cut on her thumb. It's not dirt, but it's something, and she hurriedly marks her 'code'. One, Two, Three, Four, marks on the dish in a diamond formation. If it's light enough in this place to see their 'sacrifices' across the way, it must be light enough for this to count as a 'mirror', right?

Come, Strange...this is important to see!