I just want to say that I really love that they're using the pronoun "she" in the beginning. It is refreshing to hear when most business books are directed using male pronouns.
Yeah, I find it annoying when people presume to refer to an unknown person as 'He" or "She". It's especially annoying when a writer randomly alternates genders throughout their document. Pandering much?
The singular "They" has literally been used in the English language since the 14th century, and its usage is well-understood. Any English teacher who dissuades you from its use should be stripped of their credentials, because "they" are an idiot.
'her company' for the abstract founder's business is just as wrong as 'his'.