Even though Rosavellt still loved her family and she was doing all of this to protect them, they didn't see it that way. In their eyes, Rosavellt was the reason why they lost the former war and they scorned her for it. They believe that she abandoned them and gave herself up to the demon lord out of fear.
Floid knew that Rosavellt would have a hard time in the next few months because of the likely invasion from her family. She might have to come to a final decision about where she would stand. Her entire purpose for coming to serve me was to protect her family, but what would happen when I am the one threatening her family? Will she stay with me or will she go back and help her family once again. Floid was curious to know, but he decided that he won't tell Rosavellt about that. He would rather see how things play out.
