My recommendation is based on my assumption that you are looking for ways to present your daughter's behaviors to the psychiatrist and how those behaviors lead you to believe she is exhibiting the traits of BPD. A more clinical understanding based on information by experts in the treatment of BPD will give you a more focused approach. Aguirre is the head of the DBT unit for adolescents at Harvard McLean Hospital.
To the best of my knowledge he is the leading expert in Treatment for BPD in adolescents in the US.
Hope that can help you make an informed decision based on what you are looking for.
Here is a review on Porr's book:
https://bpdfamily.com/message_board/index.php?topic=128777.0If you only have 2 weeks to prepare you might want to consider the length of Porr's book. It is cumbersome to get through and if I remember correctly the focus is more on helping parents help their children than it is on helping get a diagnoses so that a treatment plan can be established.
May want to get this book as a "next on my list to read".
lbj