Wait whose glass was poisoned?

Yvonne, that's why penelope necklace react the moment she poured the wine in the glass of yvonne. But i dont know where the poison come from if its in the wine glass or in the wine itself..

yvonne’s glass is poisoned to make penelope look like the villainous who is trying to kill yvonne.

Ohh i see.. lets find out in the next chapter..

its from the glass