Originally Posted by
NikNox 
I was just thinking that if she knew she could perhaps reiterate to SD that if she did start drinking again it wouldn't be her fault. I guess I wondered if it might make her feel sorry for SD too, for having such a tough time from her grandparents. But, it's probably a bad idea. I think that because what was said to her is so so awful we're still reeling from it
The problem is that she should absolutely, 100%, already know those things and already made them clear to her own daughter. Coming from you and/or your husband it is not likely to be received as anything but an invitation to escalate the incident even further. If she is not ready to hear and accept that her choices have negatively impacted her daughter's life, then that's what it is, sadly. Your positive influence in your SD's life will go a lot farther than trying to manage the damage from the negative ones. Good luck to you, my heart goes out to your SD as I know how she feels.