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Obtaining a PhD may be impossible for a strong chiron. I've been there as well and in the end they made it impossible for me to finalize my studies - because I refused to stop questioning what they called science, and especially their claim of superiority. I wanted to write my final work about the hypothesis that women who experienced incest, would have a more than average chance of venus/pluto connections in their charts. Of course I should have taken another subject and crawled a litte more at their feet. But I just couldn't.
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Well Astrology is more of a hobby for me and I plan to keep it out of my professional work just because I think that getting a PhD is a fine enough hurdle to attempt by itself without making it extra hard for myself! I do tend to copartmentalize things a bit and I don't plan to mix the astro with the research in any outward or obvious way. I think it would get me laughed out of the institution - or maybe even all of acadeia -or something LOL!

I think with chiron emphasized - getting a PhD for your own benefit and self-improvement or to pursue your own interests is likely to turn into a wounded and failed situation. BUT if you flip it around and use chiron to your advantage and instead seek the PhD as a means to somehow fill a healing or protecting role or some other "other directed" pursuit it is likely to turn out better.

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Your chiron in 12 may have caused you to live in solitude because of rejections of your true authentic self. In my case, the rejection has severely damaged my sense of self worth (2nd house issue). And since my chiron is in pisces, I feel much better if they all leave me alone as well.
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Well it is true that I live mostly in solitude! I am surrounded by plenty of people but there is always a certain detachment that pervades all relationships and situations (even if I get emotionally involved ironically - there is a difference between emotional empathy and reaction versus emotional attachment)!
I imagine that chiron in H12 and chiron in pisces could have their similarities. And by the way .. your chiron is in H2 - well mine is in Taurus! How intriguing!
I'd say that the taurus thing amounts more to lack of enjoyment in the temporal, venial, simple pleasures of life - contributing further to a sense of detachment. But 2nd house self worth ... wow that would be a tough one! I don't know if you subscribe to the whole "wounded healer" at all ... otherwise I would wonder about the role that valuing others might have in your life ...

It does seem like my true authentic self isn't really something people actually want to see! No matter what (most of them) say. How convenient that I have neatly separated myself into compartments so that I can pick and choose which sides to let them see!
Maybe compartmentalization isn't fully authentic? Well I don't care because it helps me survive LOL!

With chiron in H12 - I don't know that I would say "I feel much better if they all leave me alone as well" ... but I will say that you won't find me crying at home alone for want of company and companionship! It has been so long since I was in that situation where I was with any one person in a close and continual way ... I don't even know how to deal with that (besides sabotage)!

For you is it more of a wish to be left alone by most people you meet - but you like being close to a select few? Or is it more like you can be around people just fine as long as they don't try to get close? Or is it just a general feeling towards all situations involving people ... just wanting to be left alone by all people in most every way?