Hi Sis,
Maybe she just lonely and need somebody to take to.
I have wierd experience with my neighbour above, almost
every night got banging on the floor, dropping marble and
dragging of furniture, it usually after 12am then irritating.
I confronted them but to my surprise, their kids sleep early and
nobody in the house moving the furniture. And according to them, they also hearing things at nite.
From that day, i just try hard to ignore