The creature pushed harder
The creature pushed harder against the glass, making Martha’s hand tremble. She could feel its strength increasing, as if it sensed her weakening grip.

“It’s getting stronger,” she hissed through gritted teeth. George watched in horror as the glass started to tilt. “Hold on, Martha!”
he exclaimed, finally stepping closer. The pressure beneath the glass intensified, causing Martha to sweat. “I can’t hold it much longer!”
she cried out, her knuckles white with effort.