You said that it is a new snake. How long did you let it settle into it's new home before interacting with it? I have found that it can take 1 to 2 weeks sometimes. Especially if it had a very stressful shipping experience. It may just be under fed too. But I have had more strikes when a snake feels unsettled than any other time. Think about it, you just get moved into a new house, new sounds at night, your unsure of what to expect from the neighborhood, and then someone comes to your door unexpectedly. aren't you a bit more defensive than you would be at your old house where you were used to your surroundings? The fact that it is turtleing in it's hide is normal, but could also mean that it's just not quite sure of it's new home yet.

Wish you the best of luck.