WHO SAW AND HEARD?

Rhondor Dowlat of the Newsday, here's another question for you.
Were there any witnesses to the shooting of the woman at Bangladesh?
'“Someone or some persons may have followed (Cheryl Gabriel) home. She was a sure target because the person broke down the door to the house and entered after trying to call out to her several times,” Pierre (her cousin) said.'
Did she say how she came by that information?