I wanted to save my friend. I felt guilty too (prob still do as well) You can actually find my post about it. I didn't go into great detail but I blamed myself for putting school first not realizing what pain he was in. I felt powerless and awful about myself. But there's no way to know that stuff will happen in the future. Honestly I think she was saying thank you for being such a good sister as well w/o actually saying it. It's hard at first but try not to blame yourself I can't imagine what it's like to lose family that way I hope the best for you