My grandma died, but im not crying. is that normal?

Over summer vacation, my great grandmom's boyfriend past away. He was like a great grandpa to me. When i found out, I started crying hysterically for 10 minuets straight. then a couple weeks later, our family would drive her places and do things to keep her mind off of things. my mom and i went to her apartment (she lived by herself, she was 86) and we went inside and found her in her room lying on her floor. turned out she had a major stroke and fell off her bed. when she was in the hospital, she couldn't talk or open her eyes. i would cry when ever i saw her at the hospital. w eek later, she past away. Now my dad's mom was put in the hospital because she couldn't swallow food anymore cause of her ASL( its a form of lukegeriks disease). and they wanted her to be a little bit better before they gave her a feeding tube. she didn't. so they put her on morphine for a few days. she past away on monday. but i haven't cried about ther death yet. is it because im used to death now?