My brother-in-law is in hospital.

This kind of verbal violence is unacceptable. This kind of verbal violence shows that brother-in-law lacks the basic literacy of respecting and caring for others, and his behavior is unacceptable. In the face of family illness, care and support each other, instead of venting emotions and blaming others. Brother-in-law often shows such disrespect and incomprehension. My sister needs to consider communicating with him in depth and seeking outside help to solve the problem.