Scary Dream Explanation Help (I am scared :( )

About two nights ago I dreamt that a black shadowy figure was breaking into my bedroom window in front of my bed as I was laying there during the night. The sounds and scratching it was making were super realistic and I could hear it ripping the window protector net and pulling my window up and pushing past the window shades. It squeezed in and then zoomed past me kind of like how a monkey would with all fours.

The next night my mom dreamed the same exact dream of the black shadowy figure breaking into our house. With the same exact details of the sounds and how it was breaking in.

The only difference was the ending, her black figure got scared and ran back out the window when my mom told it to go away, my dream ended when it ran past me

The scary part is not just the dream, but that I never told her exactly about the dream before she dreamt it.

I am just curious how that is possible? From a science perspective of the dream could be. We never ever had a break in at our house nor did we ever watch a scary movie that had that type of scenario. About a week ago we watched the backrooms movie together, but still that does not explain how we had the same shadowy figure.