Probably not what you want to spend time reading, but a big chunk of Private Equity literature covers this.
Where does one find such literature? Any specific recommendations?
PE is about buying under-performing companies, making them more valuable, and then re-selling them. So she's being trained in how to spot a particular type of under-performing which they're in a good position to improve. They have a couple different strategies they are comfortable with, including basic stuff like switching the management to fancier plays like buying one company in a new industry with the intent to use it as a platform to acquire lots of other companies in the same industry and turn on the economies of scale.