Lysanna had not been able to keep up with her Sisters but she had been brought up to the Divine Lands because her skills in organization and negotiation were second to none in the family.
Further, the Harmonic Dragons and other key allies preferred working with her over others due to long standing bonds and trust. When the army was being assembled, several of her Sisters and others tried to get her to stay behind.
She understood they worried for her as an Immortal but Lind had only asked her what she wanted to do. He backed her choice.
The warmth of that moment really made her consider if she would hinder or help and ultimately she chose to help. Not even halfway through the trip, the trap triggered by Shoti actually put a lot of work on her plate.
