Is it normal that i felt nothing when a relative died?

It hasnt sunk in yet

Could just be a emotional defense.

If happens sometimes and when the realisation hits you blubber uncontrollably.

I'm not close to any relatives...geographically or emotionally. When one of them dies, it doesn't affect me. I feel bad for my parents losing a brother or sister.
None of my peer family members (brother, sister, cousins) have died, surprisingly. Nor their kids. So i have little experience in grief. My mom's death was very hard, but I had nothing left unsaid nor undone when she died.
One sister and I were very close, but she withdrew from our family and I haven't talked with her in years. She got married and had 3 kids, but never let us know. She even lives in another country so we had no idea where she was!
If my other siblings died, I'd feel so sad. Her? I don't know. How would she react if all of us died? I would probably feel bad that things didn't work our between us. I'd feel angry that she blew off her family. I'd feel sorry for her that she died alone. But I would react.

It's not weird. Sometimes that just happens. When my great-grandmother died I was afraid of her corpse. That's it...I wasn't sad or anything. I didn't really know her though. I only knew her while she was old and sick. But I was like 9. Luckily, I haven't been to a funeral since.

I have been hit with one after the other and I have no more tears. The last one was my dear niece and a year before my nephew, her brother. My sister still devastated.