All following are horses mouth statements by Saint Diana in hronological order(her self, tapes, letters, inteviews, her close friends, and siblings are sources.)
1.Pregnancy with William was terrible I was in a dark place, with Harry was easier, we were the happiest when Harry was born.
2.We were happy when Harry was born, I don't remember the time much, I blurred it out.
3.We were happy, and then Harry was born, it went downhill from there.
4.Harry just happened, I don't know how, it just did.
5.Charles wanted a girl(her astrologer told her so) so he was disapointed
6. Harry was born, and Charles commented that he has "rusty" hair.
7.Harry was born and Charles said :"Oh its even ginger(has red hair) And that's when something inside of me died.
I have a name for the above, it's called a dangerous pathological liar rewriting marital history, to win and inflict damage.
Mental Health?
Nope, mental health problems are not selective, and they are visible in other areas, not just when it suitably damages others.