Try to imagine back to when you were a teenager.
Your mother never has had anything kind to say about you, especially after Betty reported her to Department of Social Services when bruising and whelps were discovered on your legs after a hard beating. The matriarch got out of that one by leading investigators to believe she was the victim and the child, the victimizer.
So every time you are around her it is the standard browbeating. Of course, you are discouraged from seeking independence or hope to become self-sufficient.
Your Narcissist mother likes to keep her enemies close. It is easier to destroy them.
Your beloved pet parakeet dies. Despite your grief which you endure in silence, she spreads a vicious rumor, its death was caused because you supposedly, “Sacrificed it to Satan.”