The delusion of murder is an important manifestation of schizophrenia. Moreover, mental patients have a characteristic, that is, they don't know they are sick. Whoever says he is sick thinks others are sick. Your mother-in-law has fully embodied this feature. ...
First of all, I suggest sending you to a mental hospital. Mental illness is not uncontrollable. You should take medicine for treatment. If the result is good, it can be controlled. After you control it, just pay attention to some problems, and there will be no great danger.
Secondly, LZ has done a very good job at this point. If she is not stimulated, a major stimulus may aggravate her mental illness.
Third, LZ, don't think that your mother-in-law will agree to your marriage ... this illusion will not change. Mental patients have their own small world in their minds. If you listen to her carefully, you will find that she is actually very logical. This is a very strange phenomenon and a logical delusion.
Finally, mental patients are harmful to some extent. I believe LZ understands. I hope you pay attention to your own safety ... being killed is nothing more than two results, either being killed or killing someone who is hurting yourself to get a sense of security.
I hope LZ will be happy and find a solution as soon as possible ~