Yes the devil does attack us in the night. He does thru nightmares,
Nightmare | Definition of Nightmare by Merriam-Webster
5 days ago · Nightmare definition is – an evil spirit formerly thought to oppress people during sleep.
Nocturnal Emissions aka wet dreams.
An incubus is a demon in male form who, according to mythological and legendary traditions, lies upon sleeping women in order to engage in sexual activity with them. Its female counterpart is a succubus. Salacious tales of incubi and succubi have been told for many centuries in traditional societies.
Fear.
2 Timothy 1 vs 7 1:7 For God hath not given us the spirit of fear; but of power, and of love, and of a sound mind. Demons have different ways to attack us depression, calling out our names while we are sleeping, turning the lights, television on when we know we turned it off. Creaky noises in the house;
Unclean spirit entering into us at night making feel horrible, depressed enough to want to commit suicide;
Mathew 5 vs 2 – 5. 2 And when he was come out of the ship, immediately there met him out of the tombs a man with an unclean spirit,

3 Who had his dwelling among the tombs; and no man could bind him, no, not with chains:

4 Because that he had been often bound with fetters and chains, and the chains had been plucked asunder by him, and the fetters broken in pieces: neither could any man tame him.

5 And always, night and day, he was in the mountains, and in the tombs, crying, and cutting himself with stones.
If your Grandma has accepted Jesus Christ as her Lord and Savior All she has to do is ask God for forgiveness of sins known and unknown in Jesus Christ name. Then say out loud “In the name of Jesus Christ I bind and Rebuke every demon spirit that is in my home at this time. I plead the blood of Jesus on my mind, body, spirit and soul. In Jesus name.
For fear let her recite Psalm 118:17 King James Version (KJV)

17 I shall not die, but live, and declare the works of the Lord. Until she falls asleep. God bless and be encouraged Grandma is not crazy she’s actually woke!! She’s exclaiming to the people what Jesus Christ has been saying for over to 2000 years ago The thief (Satan & his demons) cometh not, but for to steal, and to kill, and to destroy: I am come that they might have life, and that they might have it more abundantly. So if you haven’t already please give your life to Christ because there is a war going on right now for our souls but God made it possible thru His Son that we may have eternal life in heaven.