Despite Lucien's worries….
Lumina, of course, was not using any of her bloodline powers at the moment, only using her Arcane aspect and the restoration magic.
Axel himself was also worried for a similar reason; using his rune weapons throughout the battlefield, he was keeping an eye on the Sunflower Princess.
Even Sophia and Heinz kept an eye on her with worry; the Valkyrie saw Lumina as a sister, the only person in the royal family who gazed at Sophia with genuine warmth and often worried about her.
Something similar happened with Heinz; while the Calamity Warlord was locked within the royal palace, it was the Sunflower Princess who often showed him kind acts.
She was the one who repeatedly tried to free him from the suspicions the royal family had painted on Heinz to control him; Lumina spared no effort so that he and Vyra could meet.
The more often the princess visited him in cells, the less time he had to spend in the torture sessions.
