If she was able to get the whole head in the mouth the mouse would quickly suffocate... I have seen it with constricting snakes who decide not to constrict... my young rat snakes that eat fuzzies tend to do just that... that's why I won't feed them live ones anymore! my big king rat snake, Ra would rather simply restrain a rat with a coil and start eating it alive, it was stunned first of course but he knew it was alive and wriggling and still chose to eat it without a kill... and once the rats head was in his mouth it quickly suffocated.....

she must be a pro at that.. mice are fast!!!