It’s sad because it seems like she really wasn’t loved by anyone.

To rationalize, I would say:

The Dothraki aren’t going to cry over a dead leader. They will just carry on a find a new one.

The unsullied will follow orders, without too much emotion. They don’t follow emotion, they follow orders.

Grey Worm and Jon probably took her death the hardest. But after weeks, they are past mourning. I mean they both got over Missandei and Ygrittes death after a week or so.

Tyrion/Sansa/Arya/Davos believed it was best she died.

Everyone else barely knew her.

Unfortunately she never left a happy lasting memory in Westeros. She left as quickly as she came.