what's the meaning of the sentence "slightly histrionic in his fear"?
Phrynne shook her head and took his arm. ‘Nowhere to go,’ she said. But her voice was soft with fear, and her eyes blank. ‘I don’t expect they’ll trouble us.’
Swiftly Gerald drew the thick plush curtains, leaving them in complete darkness. ‘We’ll sit it out,’ he said, slightly histrionic in his fear. ‘No matter what happens.’
He scrambled across to the switch. But when he pressed it, light did not come. ‘The current’s gone. We must get back into bed.’
Q: what's the meaning of the sentence "slightly histrionic in his fear"? what does it mean by "soft with fear"?