I agree with Bruce.
Kitty and Alpha you've both been through a horrible and unfair time. I can't imagine what it's like to carry such a burden all those years. Your loved ones would never want to be the cause of your pain and suffering.
Kitty I hope it's helped to open up about what happened. As Dee said, it's a double tragedy if you continue to punish yourself for something that was NOT your fault. Honor the soul of your daughter by living a sober and healthy life. I'm sure you will see her again.
Alpha I'm sorry for that awful incident that's haunted you all these years. Again, your sister would never want her death to ruin your life. I hope you will one day be able to let go of the idea that it was somehow your fault or that you could've done something to change it.
Prayers for you both to be comforted.