@mattmanganon Also, I Get You Were Trying to Establish a Solid Timeline, But She's Really 200 Years Old?! I Get Yoda was Hundreds of Years Old, But that was His Species... If You Have Evidence to Support This Age, Let Me Know and I'll Change My Opinion.
Many force users can easily live several hundreds of years. It rejuvinates the body, my evidence is that, Plo Koon is still in his prime, even though, at this point, he has lived over 4 times his species average life expectancy (Kel Dor consider 70+, in their years, to be pretty fucking ancient. In their years, Plo Koon was 382, at the time of his death.) Qui-Gon was confirmed to be 60 when he was killed and he didn't look a day over 30. It's implied that Jedi and Sith can greatly slow their aging process via use of the force. Hell, when you consider all of the old guys in the expanded universe, I think it's implied that Yoda only died of old age because he either wanted to die, so as to give Luke the encouragement that he needed to face Vader, or had simply just stopped trying to live longer. It's also implied that a lot of the Dathomirian Witch Mothers had a few centuries mileage on them. I think they probably teach the technique when you get older, and since Obi-Wan spent his autumn years in a cave in the ass end of no-where, I don't see who would teach it to him.