Honestly, I think almost all media treatments of this entire topic will be extremely problematic in hindsight once an actual cure for senescence is found.
In this particular case, I'd expect her to become... very interested in biochemistry. That would be a much better plot, wouldn't it? One woman's fight to cure ageing because she knows for a fact it can be done, but at the same time trying to not end up strapped to a lab table. Heck, for the first period, the fact that women were massively overlooked in science would be outright helpful. - Getting hired at a place which does whatever she was currently investigating would be fairly simple, and then just have some random dude steal credit for whatever results she manages. Paper trail? What paper trail?
If this happened to someone in an undeveloped non-Western country that didn't have much contact with the rest of the world, or in a premodern society several centuries back, the character wouldn't have the ideas to think about his or her situation as a scientific problem. But a reasonably intelligent woman who grew up in the U.S. in the early 20th Century would at least know of the existence of a culture of science that could shed light on her condition.
This raises the question of whether a nonaging person encountering science after several centuries would have the abiltiy to absorb the implications of this relatively new and unintuitive way of thinking.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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