Of course, even though he didn't tell her about his experience. She understood something must have happened to him. No matter how much she asked he won't reply. She gave up but not in love. They were together for three years, and he took such a deep step for her.
She regretted having such a stupid dream. She cried when she found him injured. Of course, she remembered her dream and also understands why he did that. Even Yan Yijun was stupid by this deep love. This deer loved her more than anything else. Fortunately, she was good with her relationship otherwise he couldn't even imagine the fate of this deer.
As closer as she, no matter how much he acted she found he has changed. But she didn't abandon him for his change, slowly adapted to his behavior and change. The relationship between them deepens too much, same as the previous deer.