Early on in my relationship with my S.O. she told me that she had been diagnosed with histrionic personality disorder and dysthymia at an early age (about 12) and that she suffered from ptsd, all resulting from childhood sexual abuse and a sexual assault in later childhood. I did some research on the topics and thought I had a basic awareness of symptoms and treatments available. With some encouragement she eventually started seeing a psychiatrist. (At this point I should point out that she had mentioned on a few occasions that she had studied abnormal psychology starting about the time she said that she had been diagnosed, and that she felt as though she could manipulate the results of just about any psychological screening.)
Her new psychiatrist screened her and what she "presented" with was ptsd and dissociative identity disorder. It was at this time that my s.o. related to me a history of d.i.d. that included six named identities and a description each of them which was to an extent confirmed by someone who had been close to her at the time. She told me that she had worked on her own to integrate the identities and thought that she had pretty much fixed the problem.
It was during this same time period that some of her behavior became a concern to me. An ex s.o. of hers had moved to town and she quickly became involved in some infidelity with him. She also appeared to engage in a great deal of flirting with people online and telling tall tales to them. At one point she admitted to the infidelity, and at a later time contradicted herself. As time went on the pattern of contradicting statements or viewpoints on other issues emerged, as well as a pattern of inability to remember statements or conversations accurately or not at all. Only two of the identities that she described to me caused memory blackouts. One who generally tried to get people to kill her, and one who was "a party girl" who was sexually promiscuous and a drinker. Eventually, over a period of several months, her behavior became more "normal" but now, a year later, she claims to not remember much of what transpired during that period and cites the d.i.d. saying that my reaction to her behavior during the period caused her stress and exacerbated the symptoms, and still seems to have occasional difficulty remembering some conversations accurately and still tends to contradict herself on occasion. She stopped seeing her psychiatrist several months ago ostensibly because of not being able to afford the co-pays, but later on she said that she didn't feel as though the sessions were helping her at all.
My question is: Is it more likely that she is a person genuinely suffering from d.i.d. or based on her self study is d.i.d. a convenient excuse for impulse behavior that she doesn't feel able to justify otherwise? The reason I question the situation in this way is that her early diagnosis of histrionic personality disorder pre-dated her self study into abnormal psychology. If I were to assume that to have been a correct diagnosis, then it might make sense to see the other behavioral disorders as a sort of masquerade that justifies the histrionic behavior. What do you all think?