Emotionally spent

I don't have any tears to cry.  My Aunt is fighting for her life and suffering from a stroke and I don't have any more tears to cry.  I wish I did... I love my Aunt as my second mother.  She's always been there for me.  I should have more tears but I don't.. I'm so so sorry.  I think my body is just in shock.  Maybe I'm still just in the numb stage and nothing has hit yet.  Maybe I'm in crisis mode and won't crash until later.  I don't know...