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Joey found an unlikely friend in Lydia Martin, with whom she became quickly very close. Lydia was attracted to the fact that she was Leonard McCoy's daughter and Joey liked that a popular person seemed to want to have her around. Lydia tried to integrate Joey into her group of friends, but Joey felt a little uncomfortable around them, like she was a bit of an outsider, so she tended to stick with Lydia, or conversely, she spent most of her afternoons curled up on Melissa McCall's couch reading or taking over the nurse's kitchen table with her books so that she could study. Joey intended to take her GED and then start nursing school as soon as the fall rolled around. Melissa secured her a volunteer position at the hospital so that Joey could have another way to spend her time beyond having her nose stuck in a book. She was studying with her entire backpack full of library books strewn about the kitchen table in the McCall kitchen, having lost track of time and forgetting to pack up and leave before the high school let out, when she met Melissa's son, Scott, in person for the first time. The two became fast, awkward friends and, eventually, started seeing one another. Things became strained after, thanks to the Nemeton, Joey spent a week as a werewolf, getting into a physical altercation with Allison Argent. Worse so after Lydia was sent away through the Nemeton only to return with no memory of her. Joey's discomfort at the idea of being pushed toward starting over with a Lydia who appeared to have no such instant interest in her frustrated Scott and more often than not, they squabbled about it.
Before things could get any better or any worse, Joey was sent back home through the Nemeton, left to pick up the pieces of a stretch of months in her life that she could never even try to explain to her family who hadn't even noticed that she was gone. When the summer wound down and it was time, Joey headed off to Starfleet Academy for her freshman year, as planned, keeping to herself and closing back into the protective shell that Lydia the First had helped her to shatter back in Beacon Hills. Joey had a private room in the dorm, so she didn't even have a roommate to try to force her out of the funk in which she was stuck trying to get over Scott now that she'd never see him again. The first few weeks of classes went smoothly because Joey couldn't be bothered to carve out a social life to break the monotony of studying and missing her friends and boyfriend, therefore, all Joey ever did was eat, sleep, study, and go to class. The fifth week of classes was about to roll in, bringing with it the threat of upcoming mid-term exams, when she walked out of her dorm on a Saturday evening in search of food during a study break only to find that her entire campus — and her with it — had been transported to another place entirely and Joey's life was being uprooted...again.
She was reunited briefly with Scott, but the relationship was fleeting before he was sent back home again. After his disappearance, she became very close friends with Kit Walker, Elsa Krauss, Jimmy Darling, and Derek Hale, the first of which she latched herself onto in an attempt to begin her healing process from the loss of Scott. By attaching herself to Kit, who was married and unavailable for a relationship, Joey found that she could claim that she'd moved on, while still keeping herself from actually doing so and therefore remaining single, in case Scott returned. Over time and with the help of Derek, with whom she had become incredibly close friends in her obliviousness to his crush on her, Joey finally took a step in the right direction by going out on a few dates with Dave Trumann. Realizing that she was not doing herself any favors by dating Dave, who was physically identical to Scott, and showing on awkward spotlight on what had been once a decent friendship, she broke it off. Shortly thereafter, Derek told her how he felt.
Her self-confidence still wavered in the presence of her "Other Self" though is mostly boosted from where she began. Joey depended much, much less on what others think of her when she was deciding what she thought of herself. Her time in the City had afforded her character growth in that sense.
When she was uprooted once again, Joanna found herself in Los Angeles, California six months ahead of the point in time when she'd left the City. She had only recently entered a serious relationship with Derek and went into a depressive funk when she lost him to the inter-dimensional travel. The only person who could get her to talk or even function, really, was Dave, who hired her as his personal assistant as he navigated Hollywood and got back on his feet in the acting world in a new place. The job forced her to be on top of everything at once and gave her little to no downtime to mourn the loss of her boyfriend. For six months, she spent nearly every waking minute with Dave and his friends on the set of their television show. It was incredibly helpful and by the time Derek arrived in that dimension, she was ready to fall back into stride with their relationship, an improved woman with more focus and drive. He was no longer the complete and total center of her universe; their relationship was healthy.
Joanna moved in with Derek another several months later to help him raise a temporally displaced child named Tim, and she transitioned out of her job as Dave's personal assistant to go back to school. Without Starfleet available, she went to UCLA instead.
Yet again, Joanna was separated from the life she'd grown to know and love when she was jolted back to the City with Derek and Tim. All of the bouncing around and the separations she suffered from her friends and found family became too much. Joanna and Derek split up but remained close friends for a short while before finally going their separate ways. She focused completely on her schooling after returning to Starfleet and graduated at the end of the fall semester of 2017. Now, she's taking a much-needed vacation before throwing herself into the working world, because Joanna knows entirely too well that working in a hospital is not easy and will suck up a lot of her time.