Rider
Rider watched with some concern as Sakura started intently into the eyes of her stuffed Shirou, wondering what she was doing, and why she was paying more attention to the stuffed toy likeness of her lover than to the real thing, who was sitting behind her. Looking at it more closely as she waited for Sakura or Shirou to react, Rider could see that it had been well-loved but, also, very well maintained. Despite the oddity of it, she couldn't help but be impressed by the quality of the obviously-homemade toy. It had obviously been a labour of love, a sign of just how much she missed the man she adored. And, having read her diary, Rider could understand why she had made it, and why, even now, it still meant so much to her. Of course, it could never replace the real thing, but nevertheless it had become a great comfort to her, and even with the real Shirou here it still provided her with that little extra comfort that she needed right now.
She could see from his actions that Shirou was also concerned about Sakura's behaviour, however, she felt he was better placed to make some effort to help his beloved. And, sure enough, he began to nuzzle against her, demonstrating his love for her, before speaking up.
"Sakura, when did you learn to be such a good seamstress? I never knew you could make some—one— like this", he said, his dislike of the way she personified the stuffed toy obvious to Rider.
"Yes, Sakura, he is very well made", Rider added, genuinely impressed by the quality of the work, and hiding her concern about Sakura's behaviour.