Are all 3 a.m. paranormal visits considered demonic.?

We have two German Shepherds that live with us in a home we purchased new in 2006 that is located in a wooded area steeped in civil war history. Sonny the male, sleeps in the bedroom with my wife and I while Ginger the female, chooses to sleep in the living room. Months ago, a pattern developed that several times a week, at 3 a.m. Ginger would come into our bedroom causing Sonny to stressfully react. Fast forward a month and really strange things began. My daughter and granddaughter visited and slept in the upstairs loft/bedroom where my grand daughter reported that she saw what appeared to be an indian and a female ghost who'se face seemed to be morphing. My grand daughter seems to have a strong interest in the spirit world and confided in me that her house is home to a mother ghost and her 2 children. Once they left, I was determined to see what was sending Ginger into our bedroom at 3 a.m. and it didn't take long. At 3 am, with flashlight in hand, I lit up the loft area shining my light all around but saw nothing. Feeling relieved and yet confused, I turned to walk back to my bedroom when almost immediately I heard a loud BOOM-boom that seemed to come from the upstairs area. It was almost as if it was saying "here I am". This episode caused me to do some online research of what was known and I was shocked to see the search results of 3 a.m. If spirits, are they demonic??? I do consider myself to be a devout christian and took on the challenge to cleanse my house by using Holy water and prayer-in EVERY room in my home. Unfortunately, nothing has changed and as before, Ginger will come in and wake us at 3:00 am. I don't know what to do at this point since praying has not stiffled the 3 am pattern going on now for months, and I'm at my wits end. Please,,,,,,,any thought or suggestions.