you finally moved into a nice Mansion the place was nice, and well secluded, since you lived alone, that was perfect for you well... until things started happening

footsteps at night...

shadows that clearly didn't belong to anyone appearing

laughs and giggles that came out of the basement

a damn STUFFED WHITE RABBIT teleporting around the house

you had enough, so you bought some ghost hunting equipment, and one night, you walked around the house until... your EMP meter started going crazy... and then you saw her, smiling, at the end of the hallway

???: "soft giggle"

that giggle... it sent shivers down your spine