Fear or face threats or imaginary enemies. She may think that you are an imaginary enemy, and in her nature of practicing hunting, she will turn her back on a better attack or run away.
Some cats shrink back because of skin discomfort, mainly because of itchy skin.
Normal cats eat kittens without serious calcium deficiency. What you should say is that her legs are not fully developed. Some kittens grow up when they are calves or round legs under normal circumstances. However, it is good to give her proper calcium supplement, and it is best to supplement vitamins at the same time. Domestic cats don't like cages or litter. She likes being close to people.
Extended data:
Cats, belonging to cats, are divided into domestic cats and wild cats, and are widely used pets in families all over the world. The ancestor of the domestic cat speculated that it was a kind of desert cat, Persian cat, which originated in ancient Egypt. It has been domesticated by human beings for 3500 years (but not completely domesticated like dogs).
Ordinary cats: round head, short face, five fingers on the forelimbs, four toes on the hind limbs, and sharp and curved claws on the toes, which can be extended. Night activities.
Hunting other animals by ambush, most of them will climb trees. Cats have fat pads at the bottom of their toes to avoid making noise when walking and not scaring away mice when hunting. When walking, the claws are in a contracted state to prevent them from becoming dull and protruding when catching mice and climbing.