Insect (Cricket) - "Pelesit"

I found this "cengkerik" bush-crickets (known as katydids in America) , in my house recently.

My mother-in-law said this is "pelesit", and someone send it to our house. She tried to kill it with 'penyapu lidi' (broom made from spines of coconut leave), but the insect flew away. This is just an innocent cricket that attract to the lamp and lost in the house.
Here another almost similar species I found from the net.