I would say do not much consider here a compatibility of nadi, blood groups, or charts. You are dealing rather with issues of insecurity, pride, and the accompanying deceptions. She and her family felt insecure and inadequate to lie about the degree. I'm sure you understand those feelings, but certainly you are concerned that such lies inevitably mean more lies follow perhaps.
It seems from your indications that she is a bit eratic in emotion and her response to those emotions.
Though, as you ask, can you change her mentality? That is never the right question really. Can you be patient and encouraging while she either changes her own mentality, or while you wait for her to continue with the same mentality and someday, maybe change. You are married though, this is no light matter... however, if she is abandoning you often, perhaps you should see that you are not necessarily obligated to go running after her again and again, nor forever bear the emotional distress involved with constant abandonment. Work on maintaining your peace, in regards to your mind and condition, and understand that when your heart has had enough, the outcome will be understood.
Also... remember that even though your parents and her parents seem quite involved in this marriage.. you are a man and she a woman, this marriage is first about the two of you... and that means that if only you are concerned, or if a bunch of family is involved with gossip feuds then there is much misery ahead.
how better to deal with shame than to no longer register the feeling of shame? If this were the case, then no lie in the beginning, no refute to the lie, no escalation of large family woes, and no embarassment and distress now.
take care okay