There is believed to be a genetic contributor to OCPD. More likely than not, it’s just “her”. Maybe, and this sound pretty bad, she’s just not that interested in your life? Lots of people are self-absorbed to the point of exclusion and insult of others, parents towards their children included. There may be also be any number of personal issues causing her to ignore you and become self absorbed, things she may not even want to acknowledge much less talk about (for example, serious medical condition recently diagnosed). If it’s a disorder it probably wouldn’t be just you. Also this behavior would not suddenly come about, it would develop and evolve over time. Are the symptoms getting worse? Are they having an effect detrimental to her life? Talk to her, ask her directly, but politely, about her attitude. If she doesn’t talk about it, or doesn’t acknowledge it, ask again, let her know how you feel directly. If you genuinely believe after considering that it could be a serious personal issue or just her being her, ask a trained psychologist.
From the DSM-IV via Wiki (though it’s been challenged as to it’s validity). Also, this is just for reference, just because she exhibits symptoms listed, that alone means nothing. She can only be properly assessed by someone trained to do so.
A pervasive pattern of preoccupation with orderliness, perfectionism, and mental and interpersonal control, at the expense of flexibility, openness, and efficiency, beginning by early adulthood and present in a variety of contexts, as indicated by four (or more) of the following:
-Is preoccupied with details, rules, lists, order, organization, or schedules to the extent that the major point of the activity is lost
-Shows perfectionism that interferes with task completion (e.g., is unable to complete a project because his or her own overly strict standards are not met)
-Is excessively devoted to work and productivity to the exclusion of leisure activities and friendships (not accounted for by obvious economic necessity)
-Is overconscientious, scrupulous, and inflexible about matters of morality, ethics, or values (not accounted for by cultural or religious identification)
-Is unable to discard worn-out or worthless objects even when they have no sentimental value
-Is reluctant to delegate tasks or to work with others unless they submit to exactly his or her way of doing things
-Adopts a miserly spending style toward both self and others; money is viewed as something to be hoarded for future catastrophes
-Shows rigidity and stubbornness