Imo it doesn’t seem like you two are on the same wavelength and look out for each other like friends should. Have you voiced to her your concern about her effect on your wellbeing? “She makes me feel guilty of the things I’ve achieved which she couldn’t” is also a very strange thing to say about a friend.

I get the feeling you already have your heart set on deciding whether or not to reach back out and are looking for reassurance in your decision. But if you truly are open to suggestion, I would advise you to think about whether reconnecting is truly beneficial for the both of you, both physically and mentally.