Commentary for Kiddushin 87:9

The mishnah implies that when the girl is a na’arah her father or his agent can marry her off, but she cannot accept her own kiddushin. Thus it contradicts Resh Lakish.

Again, Resh Lakish can deflect difficulties by ascribing them to R. Judah, who holds that only one person, the father, can accept her divorce and by extension, her kiddushin.