Yes when mother cat move the kitten they do feel threatened. I always put my cats when they had kittens in a small room with the door closed with food and water and a litter box.
Sounds like she is definitely feeling unsafe. If at all possible, give her some space of her own (if you don't have a spare room, the bottom of a bedroom cupboard can work wonders). Quiet and semi-dark (door of cupboard ajar so Mum can get in and out), is what she and the kittens need. Let her be as much as possible, and when you do pop in to make sure everything is ok, only stay a few minutes at a time to start with, until she feels more comfortable with having you around. Depending on the age of the kittens, it's best not to let people from outside your home/family, to visit as this could unsettle her also.
Yes,your Cat Feel Threatened If She Is Trying To Hide Her Kittens Away.You had better far away from it.