Yeah, you got it right. Beren might help with her instinct, but there’s gotta be danger around.
The GM describes woods haunted by spirits. Karolina uses her Instinct to go hunting because they need food. Typcially, no one else can help. However, Beren uses his instinct and says, “This sounds too dangerous. I’d better go with you!” His instinct would not fire if they had cleared the woods of monsters or made the area safe with Survivalist.
The Instinct could have been written, ‘Always help Karolina when she goes hunting’ if that’s what he cared about, but it is closer to: ‘Never let Karolina face danger alone.’
It might also apply to Karolina’s Pathfinder twists if she is in danger. Karolina gets caught by goblins as a twist for a failed Pathfinder to mark a trail. As a part of his instinct, Beren jumps to her aid and provides +1D help for her Fighter vs Nature test to deal with the twist.