Jessica Q. Fox is an Australian author and engineer. She majored in stochastic control. She is known for co-authoring the novel Treasure Planet alongside Hal Colebatch. In addition she has published four other books. Apparently, what the initial Q stands for is a closely guarded secret.
Tales of Known Space/Man-Kzin Wars:
1 The Witch And The Engineer 
2 The Witch And The Warrior Princess 
3 The Witch And Robin Hood 
Outta Skull