Odd eating behavior

So my lil BP eats well but it's a bit unconventional, she will strike at the F/T mouse but not constrict.
I will drop the prey after her bite and when I check on her later she is eating it.
I'm not sure what' going on.
I assume that everything is OK if she is eating but I'm curious about this behaviour.
Has anyone else experienced this?

The couple of times I've fed pre-killed mine hasn't constricted. She just slithers up to it and starts eating. Other members have said theirs constrict whether the rodent's already dead or not. Just like people, some are overachievers and some do the bare minimum :)

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Mine sometimes strikes and constricts f/t, but sometimes he just waits till I give up and drop the rat and he just eats it. Without striking or constricting. Haven't got a slightest clue why. ;-)