Born into a poor family that begged and stole to get by. It wasn't until she hit puberty that she started showing neurogenic abilities. Her parents took full advantage of any skill she had to put (some) food on the table but mostly drugs in their pockets. They got away with it for a few years until they pressed their luck and got caught. andi was tagged on the spot and sent to the academy at age 11.
Flourished at the school and did well in her studys. Had a particular fondness for flying because it was the only time she actually felt free of the life she had been living. Any time she's wasn't flying through the cosmos she felt like she was taking a step back towards that life and her parents (who never tried to find her after they eventually got out of prison). Became the best of the best pilots and set all the school records. Until vash-freaking-keller showed up.
this upset in her top seat didn't completely unnerve her. she always stated that if they were to ever actually go up against one another, there was no way he'd best her. they never got the chance to test that theory, as he was kicked out almost as quickly as he got there (or so it seemed) and andi was once again the best at school.
upon graduating, she entertained joining the alliance for a millisecond. it was a lucrative career field if she could stomach all the shit they pulled, but she ultimately decided against it. instead she picked up random odd jobs across the galaxy, never really sticking to one ship much longer than a year or so. she did a five year long stint in the professional air racing scene (winning a nice amount of prize money while there) before skipping out on it to go fly mining crafts.
she continued on this path of jumping from ship to ship for six more years until a job landed in her lap that ended up changing her life in more ways than she could have ever known. she was hired to fly a cargo ship from nibiru to another seedy station, but the catch was she couldn't ask what she was carrying. the job paid handsomely (almost better than some of the races she won), but she couldn't shake this sinking feeling that something wasn't right about this job. so she snuck into the docks the night before she was supposed to fly out to watch them loading the ship.
what she found was at least 15 different species of animals, some she knew to be protected, being herded into the ship's cargo bay.
her initial instinct was to go straight to the authorities, but her better judgement told her that wouldn't do much. instead, she sent an encrypted comm message to an old school friend who had chosen to enlist with the alliance (she and arty went way back to the old academy days). she told him about the cargo and that she wasn't supposed to know about it. he instructed her to fly out like nothing was wrong and that he'd have an alliance cruiser intercept her ship while she was en route to her destination.
the bust went without a hitch and all the animals were taken into custody. they also found crates full of earth antiquities that had been stolen and missing for several years. the alliance managed to find and capture the man who had hired her, but his connections within the government managed to get him only a few months time in prison. it was advised by her alliance friend that she lay low and keep her head down, two things she'd never really been that great at. so she found a transport ship that needed a pilot and gave them a fake name to work under. she was with that ship for two years before one of her former employers contacts found her.
she tried to leave the ship before anyone got caught in the mess she'd created, but they were chased down and every one of them was killed in front of her. he almost got her too, but in the fight that followed his attempt on her life, she was able to ascertain information about his physical health that he likely didn't even know himself through the use of her neurogenics. this upper hand allowed her to play on his weakness and kill him.
once she was able to think again, she reached out for help one more time, calling an old friend she made on the racing circuit. she told him about the trafficking job and how she had turned in the man who had hired her. she told him about how she had been in hiding for the last year but that they had somehow found her and hunted down the ship she was on. she didn't disclose that whoever had come after her had killed the entire ship, but seeing as she had killed the man she didn't think it was important.
donovan wescott offered her a job on his scavenger ship. it didn't offer much in the way of protection, but at least she'd be around people she knew she could trust. she took the job and was the pilot for the vulture for the next year. eventually, her bounty caught back up to her. the woman who was coming after her made a wrong move when she tried to kill two bounties with one stone. in the end, andi cheated death one more time and got a ship, the perseus, out of the deal. she left the vulture and took up the life of a mercenary, flying her own ship.