Ahsoka Live Action Series (Disney+)

Sailorsaint said
They don’t claim it in this article but I think once Morgan dies, the blade loses its power

https://screenrant.com/blade-talzin-morgan-elsbeth-sword-ahsoka-star-wars/

I wouldn't say that. The blade's power was already evident before she took hold of it. That said, it's somewhere in the ruins after that base was destroyed.