What is the Qareen, and is it from the Jinn or a soul, and does it possess good and evil, and does it affect a pregnant woman by killing her child in its mother's womb?

The Qareen is a human's constant companion from among the Jinn, and its mission is to mislead and command evil. It does not have the direct ability to cause a woman to miscarry, but it may tempt her to kill her child, and it can sometimes cause a miscarriage for other reasons.