In this winter my cat's favorite sleeping place is under my blanket. Even when I am not present she likes to sleep there. Since she is unable to lift the blanket herself to get inside I need to lift it so that see can get inside. I understand when she wants to get inside blanket from her act of scratching the side of blanket with her paws and trying to lift the blanket with her teeth.
Now I am concerned regarding oxygen availability inside the blanket. In the conditions in which she sleeps I would have suffocated to death. But if I try to lift the blanket and place it up to her neck freeing her nostrils, she doesn't like it and slips further inside to get fully covered again. I don't understand how she sleeps peacefully in such suffocating conditions?
Is it all right to let her sleep like that? Is there any chance of accident?