There is nothing, nothing worth drinking over.
Do you belong to a support group? When my youngest sister was killed, I couldn't get back home until the next day, so I was in an AA meeting that night. After that, I tried to focus on being there for the rest of my family.
If you don't have that kind of support or someone understanding to lean on, then stay close to us.
I'm sorry your husband is so uncaring; no one deserves what happened to your sister. Focus on the fact that she survived and she will recover from this. Make sure that you survive it too.