I guess we should be getting back, then... [ Rem remains careful not to blotch the red marking with her thumb, placing it into her satchel. She, too, can't tell from just looking-- for all she knows, this is some sort of elaborate prank. So, she'll have to show the piece to someone more experienced at determining mysterious red substances and/or stone.

Rem lifts her head, looking to him with a smile. ] Thank you for your help. Fighting that thing-- I don't think I could have won on my own.