Unhealthy relationship - mental disorder

My wife is jealous and over possessive about the affection between me and my mother. She has been controlling, manipulative, over aggressive and short tempered. She has very low self-esteem and feels insecured. She threatens me saying she will leave me or kill herself if I don't live as she expected. She wants me to love only her (doesn't like affection b/w me my mother). Many times she has been emotionally abusive on me. She feels angry if she see a call log where I called my mother. I'm very upset with this behavior of wife since 1.5 years. I had to keep my single mom away from me due to all these issues causing family problems and fight between mom and wife. She feels that there is nothing wrong with her behavior and she is not ready to attend any counselling or consult a psychiatrist. Are these psychological disorders? Can these be treated and cured? Note: She has Seizure Disorder since 10 years (on medication - takes mazetol 200 twice a day)