Ch-80 is when she joined up with the Shadows Hand mercenary organization. It's somewhere around the 330s chapters that she starts floating the idea of forming the healing organization with her friends who are now in the leadership of the city the Shadows Hand is based in. Volume 2 starts at ch-98 where the story switches location from Australia to China. Sidney is considered a frontier city out at the edge of human controlled regions, whereas Shanghai is one of the safe, tier-1, core cities of humanity. Thus she gets a "proper" education on how to use her skills while attending University here. As for the business aspect, she does what she's good at from her past life: business consultancy. She's the ideas person, the developer of plans, and a guide for her clients. Her (modern) schemes are innovative and grand, and the resulting profits are massive for her clients.