An Early "Mom"
The oldest of the Leska siblings, Viviane was thrust into the role of caretaker when their parents died at a young age. She never complained though, and as they grew, both Alicia and Castor would also learn and help her as well, in order to lessen the burden as a thank you gesture. Even to this day, the more maternal side of her still arises every so often, worrying about the well being of her siblings.
Atypical Witch
Due to lack of money, Viviane would often resort to gathering herbs and plants to make oitments and remedies for whatever ailment her family had at the time. As she grew up, the need gave birth to interest, and grew to enjoyment. Once her siblings were old and capable enough to take care of themselves while she was away, she took up any jobs, lectures and classes that were chemistry related.
Her expertize with the natural side of the subject and ability to grasp the other aspects of it all, while using rather unorthodox methods made some people confused, wondering, some even suspicious of her. Soon enough, we would be nicknamed "Witch". While she has no strong feelings for what the nickname entails in the literal aspect, she likes the mystery of it, and so she didn't stop the spreading of the nickname.
Shopping Queen
Viviane knows what a good deal is when she sees it. Markets fear her, for she comes, buys in bulk, haggles everything to a price that is both cheap for her and fair, and disappears. The biggest victims are produce, meats, fish and any stores that sell materials that are useful for her chemistry, while those involved with metals are usually safe, unless she needs new tools.