amorrison, good on you for joining the forum. I hope that you continue to find it helpful. I get what you mean about feeling like you can't talk about it, because you don't want to hurt anybody with your own hurt. This is a safe place to talk about it, but maybe one day you will feel comfortable talking about it with someone you know and trust, your best friend for example... it must be very heavy carrying this with you and trying to let go of it at the same time. Maybe he can help you carry it sometimes. He may be hurt by it as well. He may be wanting to discuss it. The only way to find out is to ask. And if he responds negatively to that, you still have us, and you most likely still have him, but just can't confide. You should be allowed to though, if you so choose. Try not to take it so hard on yourself by carrying it alone. At least come back to the forum whenever you feel you need to.
Please also focus on healing, rather than the events so that this does not become a second tragedy (surviving with PTSD, rather than living with it/healing). It may be hard with you sister and the kids, and other loved ones to forget about it (and I'm not suggesting to try and erase it from your memory, because that would be expecting too much), but please focus on the healing, because that is what this forum is about, and it is what your journey is for the time being.
You are very courageous for being there for your sister, the kids, and taking care not to hurt anybody. But you are just as important as anybody else.
Take Care,
BIG HUGS.
S.