Entity greetings at night?

[Nowheretoday]

Second night I've been waken up by a voice, last night I was deep in sleep dreaming nothing even close to a nightmare when on my right ear I hear a growling/scream, the night before it was a phrase yelled in anger, don't remember what it said, but didn't feel distant at all. And all this now that my girlfriend is staying with me for the week. All the other times that I've slept with her I had been drinking and never heard anything. Let's add to this that she had dealt with several situations of sorrow in her life with a recent attempt to take her own life. On the first occasion I know she woke up also, the second was just me.
My theory says there's an entity near her that has been feeding of this negative energy and is probably not happy at all with me lol, I greeted it back in my own way.
As a note I don't walk around hearing or seeing things like this.
Anyone ever experienced something like this?