That's a good point, and Wookiepedia makes a strong reference to the fact that when Jedi leave the Order, they are not exactly fit for the world around them. Their skills and experience are relevant mostly to serving the Order. That said, I can't see Ahsoka heading down a Dark Side path after her awakening during the Barriss incident. I think she would stay with Padme for a short time, then try to find accomodations in the Coruscant underworld, where it's cheaper to live -- seeing as she had left the Order with no possessions and no money. Eventually she'd find a job as a freelancing body guard, or bounty hunter of sorts. Over time she would let her Force powers atrophy (the same way Obi-Wan let his in hiding), since she wouldn't be using them so actively on a daily basis. That is if some drastic new events didn't influence her to take a more selfish move towards the Dark Side, to then find redemption for her own actions again by the time of Rebels. The intention of The Clone Wars team was to portray her exciting life and adventures as a skillful civilian in the underworld life of Coruscant. Think along the lines of Boba Fett's life, except on the good side and as an ex-Jedi. https://www.youtube.com/watch?v=cEbWuGMJMxA