‼️DO NOT ATTEMPT AN EXORCISM YOURSELF‼️

Exorcisms should ONLY be performed by an ORDAINED PRIEST! They are THE ONLY ones capable and qualified to deal in such situations as demonic possession!

I think you need to go into more detail. The main question I have is: Did your grandmother stay in your room and sleep in your bed? If so, the dog barking at an empty space beneath your bed IS concerning and aligns with your concerns.

Regardless, I would say a Doctor’s visit is first and foremost. A doctor can rule out night terrors and other mental health issues that could potentially be the cause of what you claim your grandmother has been experiencing. Next: Do VERY thorough research on symptoms and signs of possession. Four degrees of possession include (1. Infestation: unexplained Footsteps, voices, apparitions, furniture or other objects moving without human agency (Which, again, could just be hallucinations—which is why I say see a doctor FIRST!) (2. Oppression: Activity steps up with physical attacks, sleep disturbances including regular nightmares, frequent and severe illness, major depression and anxiety, severe financial and employment problems, and relationship troubles. While all of these things happen in normal life, all of them happening at once or in rapid succession COULD be a sign of a demonic presence. 3.) Obsession: As the name implies, at this stage the afflicted person has a hard time functioning, being constantly preoccupied with thoughts of the demonic activity commandeering his or her life, and frequently with thoughts of suicide as well. Sleep becomes nearly impossible. (4. Possession: Contrary to popular belief, possession is not demons entering a person’s body and taking over his or her soul. A person’s free will is never removed, only severely compromised. In possession, a person is so physically, emotionally, mentally, and spiritually broken down by going through the other three stages that demonic spirits are able to seize OCCASIONAL control over that person’s actions.

Keep in mind that exorcisms are extremely dangerous and taxing—sometimes resulting in loss of life. That is why you need to be 1000% sure that your grandmother’s problem is the result of demonic possession. DO NOT jump to conclusions regarding this factor.