The Crab Claw, part 5

Okay, just slipping today's bit in at the last minute.
The story thus far:

Once there was a girl who was born with a crab claw where her right hand should have been. At first, no one seemed to notice the claw itself, but they did notice what it clung to: words, hair, other people. As she grew, her clutch turned into an iron grip. Then one day, as the girl sat on a riverbank dangling her clock moodily in the water, the claw clamped on a stone and became stuck between two larger stones. The girl screamed and tried to wrench her claw free, but she...

... It what?! What did it do?!

Tomorrow, chickadees. It's bed time.