There's this funny thing called "Force Speed". Just because Miasa is in possession of a serpentine lower body, does not mean she's naturally slow.

We'll see if Miasa includes something extra later on that'll be more blatant for Sish to discover.

Sish will have to work hard and be really lucky to discover the fact that its booby-trapped. The one most likely to be able to spot such (Xid) apparently won't go near it, due to the fact that it'll be rather dark.