What is the main conflict in Suite Scarlett by Maureen Johnson?

"Suite Scarlett" by Maureen Johnson is an entertaining novel about Scarlett Martin, a fifteen-year-old girl whose family owns a hotel in New York City. After Scarlett receives the duty of caring for the Empire Suite on her fifteenth birthday, her summer is thrown into chaos when Mrs. Amberson, an eccentric actress, decides to move into the Hopewell for the summer and becomes involved in the production of "Hamlet" that Spencer, Scarlett's older brother, is acting in. "Suite Scarlett" is an entertaining account of the ways a teenage girl's life changes and the things she learns about herself in one summer as she does the best she can to protect her family.