Most people have some kind of background story. Parents, schools (or lack thereof), at least a few formative experiences that may have contributed to making them into the people they are at present. Good or bad, most people have a background.
Unfortunately, Clara couldn't tell you a bit about it. Her first memory is of waking up in a hospital bed in Alberta. Nobody knew who her parents were, she had simply been dumped off in front of a hospital, unconscious, with a head wound and a broken arm. She knew her name was Clara, and that she was seven years old — but that was all that she remembered about her identity. Once she recovered, she was absorbed into the foster care system, and was shuffled about from there. She never quite found a family that was the right fit for her, bouncing around from orphanage to foster home.
At age 11, she started running off into the wilderness, disappearing longer and longer, costing her many a foster home.
Eventually, in late 2011, a Brian found her on one such adventure, and took her into the Lighthouse. It was only there that her tendencies to run off were curbed — she would only get so far before a Brian would find her and drag her back home. After many incidents, she stopped running off — her final excursion seemed to have resulted in her manifesting, and one of the Brians had the smell to prove it after a skunk stepped between them and valliantly hosed him down. The little skunk followed them home, and was given the name Pepe.
It was also then that Clara became Weasel, as her ability certainly reflected her personality. With a tough outer demeanor, she took a bit of time to really and truly integrate into the culture of the Lighthouse, often preferring the company of her animals over the others, but she eventually came out of that shell. She excelled at the training offered by Brian, and in fact threw herself into such training with great enthusiasm — being able to defend herself meant that she could go out on her own…one day.
Weasel remained with the Lighthouse, eventually going from being a charge to helping out with the younger children, though after 16, she began to roam much more. Most of the time, this was spun as a camping trip for the kids, and she would wander off to find food or water — while she loved the younger kids, she relished every chance she had to get out and into nature. Eventually, she parted ways with the Lighthouse — her siblings had ventured off to New York, and after a bit of time spent out in the wilds of Canada, she quietly made her way down to see what all of the fuss was about.
With her came Pepe Le Pew the skunk (now an old man by skunk standards), and a tiny juvenile Least Weasel named Ron who she rescued about a month prior to making her way down to America.