Rosa noticed the arrow when it was already too late. She could back down only to let herself be stabbed by the Doctor, or she could let the arrow hit her on the head; with the continuous attack of her opponent, Rosa was finding it difficult to dodge in both cases. Rosa blocked the first attack from the Doctor and decided to let go as the arrow was aimed at a more fatal area. She raised one blade to deflect the arrow while using the other to keep blocking the blade in the Doctor's hand.
Rosa did not realize the Doctor had a hidden dagger in his other hand. He took it out to stab her. Rosa watched in fear of her mistake. Just in that moment, before Rosa could react. Another person arrived just in time to pull Rosa away and kick the Doctor before her. The arrow went off into the open without hitting anyone.
“You need to be more flexible, my dear.” Darce’s voice made Rosa smile.
Her heart, which was thumping loud enough in fear, relaxed immediately. “How did you get here?”