It is wrong to not cry for a sibing's death?

It is wrong to not cry for a sibings death?

Today my sister would have had her 28th birthday. We had something of a remembrance because my mother wanted it, but I didn't really want it.

It's not that I don't miss her, but she gave me nothing but grief when I tried to reconcile with her, or lied, or made me false promises. She was no princess, and I find it kind of ridiculous that everyone talks of her as this misunderstood heroine when they shunned her while she was alive.

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Someone felt the need to send me a PM full of insults because of this question.
I've made it clear that I'm not happy about her death, and I do miss her, but at the same time she caused a lot of grief for everyone involved with her.
It is wrong to not cry for a sibing's death?
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