Ohhh, I loved the Famous Five and Secret Seven (though I preferred Secret Seven, boy thing?). Though how old I was at the time I couldn't tell you, it was soooooooo long ago.
Also, what I was reading as a child is irrelevant as an adult. Jack just cannot let her childhood go, can she? She is consumed with resentment, her bitterness is palpable. However it is clear that Jack blames everyone else for failings in her past, shouldering non of the blame herself.
Instead of constantly looking back, to her childhood, her failures in the past, her time in the fire service, her time in "poverty", her time in the limelight, her time when money was so plentiful she dinned at the Groucho, she should be looking forward.
Jack should look at where she is and what she can do to progress. She was given a chance because of her history (real or fantasy) so she should be grateful for that past. Jack was given an opportunity that most people in poverty do not get. Build on that and move forward.
We are all a product of our past, it makes us who we are. Most of us have made mistakes, had chances we wasted, would do things differently, had people do things to us unfairly. However most use that past constructively to make a better future and leave all that where it belongs, history.
in a box for that 
, hammock 
not the underground smugglers caves reached by boat in the dead of night by kids
