Excitement.

Fragrantia rushed away from the tree with Valerian in her arms. She was afraid of the terrifying flow of mana emitting from the tree. This flow was way stronger than what a human can ever have. 

She was running with her back to the tree, this action of her was nothing more than just a projection of maternal love she had for the child in her arms. While Valerian could see the tree trunk and leaves to be lit up with dim golden light. 

He patted her back frantically and said, "Stop, it is not something dangerous." 

Fragrantia could sense the confidence in his tone and stopped. She was startled by the sudden spike in the mana, but now that the child has pointed it out, and she sensed that the mana was not hostile. Letting out a breath, she let Valerian down from her arms.