Have you ever seen a mantis eat a frog? or a lizard twice or thrice it's size? A whole ass chameleon? If not then trust me when I say that This is exactly lore friendly I tell you.
I thought you were joking so I looked it up and yeah, large Mantises can eat small frogs, lizards, even hummingbirds!
This caught my attention tho:
"Method of attack: Mantises are ambush predators. They will grab their prey with their powerful front legs and begin eating it while it's still alive"
Looks back at the chapter
She grabbed him with the front legs, it's over for him yo.