Commentary for Kiddushin 118:5

R. Zevid teaches R. Yohanan and Resh Lakish’s dispute in a slightly different context. Instead of teaching it about a case where the woman changed her mind with regard to kiddushin that will not take effect for thirty days, he teaches it with regard to the case of a woman who authorized her agent to betroth her and then changed her mind before the agent did so. R. Yohanan says that she can retract—her words authorizing the agent to betroth her can be annulled by other words retracting his agency. Resh Lakish says she may not.