Mr.Shiv raj
Your wife has her lagna in Virgo (an earthy sign). The 1st cusp sub lord is Saturn who is in the star of Mars in a watery sign Scorpio. Saturn is in the sub of Moon who also signifies Saturn in Capricorn. Virgo is an earthy sign which gives the native practical nature. But Capricorn also is an earthy sign. As Moon is in a watery sign Scorpio she is very intelligent but she will have the ideas of delays and postponements. Capricorn gives the idea to lead others. Saturn is in aspect to Sun and Jupiter. So the nature of your wife is she will be more practical, intelligent and have some head strong without diplomacy. She seems to be some what egoistic as she feels that she is correct and nobody is not paying attention to her. She is more attached to her father=in=law than her mother-in-law.
It seems that your mother likes discipline, but will not satisfy easily with the acts of anybody. She likes her own discipline. She is a peace loving woman. I hope the conflict is between them, because she will not satisfy easily. She dislikes the attitude of your wife.
You are more attached to your mother and will not pay attention to your wife. You always worry about things more than you have to. So in her inner heart, it may be for change of house to live separately. She might be earning. She is also a peace loving woman.
You understand her problem and settle to live happily.
Good Luck
JVS Rao (KP system follower)