What exactly are you referring to?
The on-attack impact sound of her regular projectile?
Her Q? W? E? R?
I can only guess it's her W, but in this video she had another iteration of W and I don't think the effect for the W was made. "W" is the only skill that has a card floating above a target. I certainly don't see any card in the video - if this is what you mean, it won't be fixed because there is a lack of assets.
If you meant something else, please remake the thread with more detailed info, thanks