How would you feel if the guy your nephew was with came to the funeral?

My nephew ( Mat) I admit was getting high on spice an drinking. Well he 'was" 23. So they was getting high an other guy said I am going in now. My nephew told Tony I am to high to drive home. So I am gonna sleep in my car for awhile. Well Tony's father was concerned an when an checked on Mat. An when in told everyone he is drunk. So the sister of Tony went an checked, an said no pulse. Someone called 911 an Mat was declared dead. We are at a loss. Tony came to the funeral. Mats mom just talked like it was ok to him. I found it revolting, gave him evil eye,dropped few insults. What would your reaction be? I think he should be punished. Do you? Absolutely true.