Rider listened to Vanguard's response to her and Sakura's questions. His obviously-sarcastic response to her question about the motives of the gods made it pretty clear that his opinion of them was no higher than her opinion of the gods she had known. Before she could make any response, though, Sakura spoke up, before suddenly standing up and leaving.
Eh, what? thought Rider.
"OK, goodbye Sakura, see you later", she said with a somewhat-bemused smile.
Rider considered following her, but decided against it. Whilst Sakura might put herself in danger by walking out in that way, she clearly wanted to go alone, for whatever reason, and following her would damage her trust in Rider, putting her in more danger in the future. And, besides, she wanted to know more about Vanguard.
Once Sakura had left, she finished up her delicious dinner, before addressing Vanguard's final statement.
"Of course not. The gods do not care for ordinary mortals, or even for other gods. They just see them as playthings, or as tools to achieve an end. They demand worship just for existing, make arbitrary rules which they consider theirselves immune to, punish innocent people out of pure jealousy or greed and subject anyone who stands against them to eternal torture. Personally, I am sure that they see your fate as a 'just' punishment for your defiance, I have never yet seen or heard of a god who could resist handing out the most horrendous punishments possible for such obvious defiance of their will, but even if I am mistaken in that regard I am sure they were not acting out of a desire to reward you", she said, her contempt of the gods she had known abundently clear in her words and manner of speech.