Here we see, just before the frist two four-hour meetings with Ralph, a third meeting with Ralph, this one for six hours. There are many other long meetings with this Ralph found throughout the month of September.
Following this is a four hour meeting with "JV", which is a common acronym for "junior varsity", the back-up players in high school and college sports. At this point, you might be thinking, "why are these appointments listed not by their start time, but by hours?" This is a person who is more concerned with the length of her meetings than when they actually begin, meaning that they are likely flexibly scheduled.
At this time, I have no option but to conclude that this is a girl who has been drawn into a life of prostitution, and is likely a "high class" call girl. Ralph seems to be her main client, and perhaps she was scheduled for whatever party this junior varsity team must have planned. Finally, Corduroy could be the name of a club she is to perform at, or perhaps a nickname for another client.
The fact that this girl is going to college means that there is hope for her, but the fact that it is a small-time college means that she doesn't have the means to attend a better institution. I'm sure she didn't mean to become a call girl. Perhaps she is a single parent who needed the money. Whatever the reason, we can only imagine the devistating effect of her losing this schedule book. A missed client means missed money and an angry pimp.
She never did come back for the book, to my knowledge.