Sage cleasing

Dessa

I'm talking to my sister about the house we lived in when we were younger. My mother was abusive and my sister now owns the house but is terrified to be there alone. We both believe 100% that the house was/is haunted, but how do you know for certain? She's doing a sage cleansing soon, as she asked my advice and I totally agree with it because I'm very spiritual and she's starting to get into it