The creatures seem practically paralyzed, there's not even a twitch-- but Rena's already backing up with more than just a walk, staying behind Cassis as she glances left and right and behind, options running through her head. She could charge up something with more power, but with just the two of them, and if they were way too far outnumbered--

"Not much. At least ten seconds or more, it's different with some--" monsters, she doesn't bother finishing, instead continuing: "Let's get out of here, quick."