Sweety, I don't think you're crazy. You are not to blame for your past or the affect it has had on you. You are not to blame for your relatives who remain stuck in their problems.
Just for today, why not do something nice for yourself to celebrate finding your own recovery. Take in a meeting, go for a walk in nature and listen carefully as the birds and the breeze tell you their stories and then smile and nod and tell them some of your own.
It's okay to be sad, just don't hang out there too long. The birds and the breeze are waiting for you.
Hugs and Hugs