She screamed when she hit and started sliding. Fuck...oh fuck... she breathed as she managed to grab a handhold and hung there, panting for breath. If she was lucky, someone either heard or saw her (fat chance of either). She refused to look down.  Instead, she looked up, hoping to find something else to grab hold of to pull herself up. Her feet searched for toeholds, anything to give her leverage to get up onto the roof.