My wife harassing my mom and mentally torturing me

We have been married for close to 4 months only and since last 3 months my wife is being abusive and not respecting my mother she is a widow and mentally Torturing me. All she is wants don’t want to be away from her mother and her mother is supportive in such activities .she don’t want to be in this marriage but her family is pushing to stay in it because of the family respect but she doesn’t want the marriage and now she might be 2 week pregnant and left our home and gone to her parents with her own wish and they don’t want to solve the issue instead want to keep her their for 3 months .i want to know what are my options regarding this matter ??? And what happens to the baby because she says she doesn’t want the child ??