Without  warning,  Bramblestar  reached  up  a  paw  and  swiped  at Squirrelflight. She was taken by surprise; her mate’s spirit claws scratched her face, leaving tracks of blood along her muzzle.
Squirrelflight  reared  back  in  shock,  letting  out  a  cry  of  alarm.  Still controlled by Ashfur, Bramblestar began to circle her, his claws extended and his teeth bared.

[...]

Meanwhile, though Squirrelflight’s ears were flattened and her whiskers were quivering in fear, she still whirled to face Ashfur boldly. “What do you think you’re doing?” she demanded.
Ashfur’s reply was too muffled for Shadowsight to make it out, though it sounded as if he was addressing Bramblestar. He fixed a furious glare on the ThunderClan leader; Shadowsight wondered, with a surge of hope, if he was finding it hard to control him, and was angry that Bramblestar would try to fight back.
After  a  moment  of  apparent  struggle,  Bramblestar  turned  away  and launched himself at Squirrelflight again. But now Squirrelflight was ready for him,  and  dodged  aside  just  in  time.  Shadowsight  held  his  breath  as Bramblestar  repeated  the  same  move  over  and  over,  while  Squirrelflightmanaged to step out of his way or push him off without causing him harm.
“Bramblestar!” she yowled as he snapped at her throat. “Remember who you are! Fight against Ashfur . . . please!”
For a heartbeat, her appeal seemed to work. Bramblestar stumbled and pulled away from her, his eyes focusing once more. “I’m sorry,” he choked out. “Squirrel—”
“No!” Ashfur screeched.
Back under his control, Bramblestar attacked again. This time, he flung Squirrelflight to the ground, his claws poised over her throat. Desperate to escape, she lunged to bite his leg, but Bramblestar seemed hardly aware of it.
He  doesn’t  feel  pain!  Shadowsight  thought,  horrified. How  can Squirrelflight possibly win this fight?

Place of No Stars, Chapter 15