:::::I don't think it's as bad as all that; the "tenure" sections have a reasonable amount of detail on what she's been doing for the last six years. Yes, you could write a biography of Lincoln and leave out the part about his assassination. But someone else would soon add the information, because it's important. Since nobody has added anything substantial to this article in quite a while, I took that as an indication that nothing on the level of an assassination was omitted.  
 :::::I'm strongly against holding Good Articles to too high a standard. FA got too hard, so we made GA. If GA gets too hard, eventually that will lead to creating yet another level for "Pretty Good Articles" or some such thing, to serve the purpose GA was meant to do. I already dislike how formalized the GA process has become; it was supposed to be quick recognition without all the piling on. It's just a little green plus sign at the top of the page. It doesn't cost us anything. Anyway, you're free to start a GA review if you want to, but since you're the main contributor and probably would be the one to make the improvements, I don't know why you wouldn't just work on the article instead. At any rate, whatever you decide to do is okay by me.