Robin Lefler

Robin Lefler was portrayed by Joanne Busch. She was the ex-love interest of Wesley Crusher. They both have a daughter, Lillian Crusher, who is a CMO aboard the USS Valiant.
By 2373, Lefler was assigned as operations officer on the USS Excalibur (NCC-26517) under Captain Mackenzie Calhoun. (Star Trek: New Frontier novel: Into the Void) 
Around 2377, Lefler married Thallonian "Ambassador" Si Cwan. In 2377, newly promoted Lieutenant Commander Lefler was assigned as the Starfleet Liaison to the New Thallonian Protectorate. (Star Trek: New Frontier novel: After the Fall) 
Circa 2379, Lefler was pregnant with Si Cwan's child, and following Si Cwan death, Lefler became partly responsible for leading the New Thallonian Protectorate. (Star Trek: New Frontier comic: "Turnaround, Part I") 
In 2377, Lefler was promoted to lieutenant commander and transferred to the USS Excelsior (NCC-77246). During her years aboard the Excelsior, she reunited with old boyfriend, Wesley Crusher after he was abducted by and eventually rescued by the Excelsior. The two would have sex and produce a child together. Lefler gave birth to daughter, Lillian. She eventually became the ship's first officer, serving under Elizabeth Shelby. Lefler sent Lillian to live aboard the Titan with her father, who is the assistant chief engineer.