Christa Inger-Why is IngerMarine Sale added to calculate expected portfolio return

Individual investor problem - Inger family related

Hi, in Reading 8, practice problem 2, where we are asked to calculate the return requirements of Christa, they have added the ingerMarine sale proceed in the computation. I am unable to follow where in the question is it mentioned that the return of 82,500 included ingermarine. I was assuming that the return of 82500 was from mutual funds(75000) and money market fund(25000) she already owned. Would really appreciate if someone could help explain this.