Are the sentences in article correct?

http://www.healthylifevision.com/she-slept-with-a-snake-and-then-the-vet-told-her-something-shocking/

Could you tell me if the part in brackets is correct? What does it mean "throughout its length"?

The vet listened to the story carefully and then asked the woman whether the snake sleeps with her at night, (wraps around her, and whether it tends to spread out throughout its length.)

As he explained, each time the snake used to creep and wrap around the lady`s body, (it was actually checking her size and weighing how a great meal she was and how prepared it has to be prior the attack.) Speaking of the reason for its refusal to eat, it was actually making enough space so that it is easier to swallow and digest its next meal the lady herself.

Thanks