(Mishnah): A girl is always in her father's Reshus (jurisdiction), until she enters her husband's Reshus for Nisu'in;

If her father gave her over to her husband's Sheluchim, she is in her husband's Reshus;

If the father or his Sheluchim went with her husband's Sheluchim, she is [still] in her father's Reshus;

If her father's Sheluchim gave her to the husband's Sheluchim, she is in her husband's Reshus.

(Gemara): This is not only [if she entered] Chupah. Rather, it is even a house that has a Chupah in it.

Note: Ha'Itur (Sha'ar 2, Birkas Chasanim 6a) says that Chupah is a canopy special for Shushbinin to sit with [the Chasan and Kalah].

Question: If there is a big hall and a small room, and there is a Chupah in the small room, if she entered the hall (is it as if she entered Chupah - R. MEIR SIMCHAH)?

Question: For what [does our Mishnah say that she is in her husband's Reshus]?

Answer #1 (R. Lazar): It is to inherit her (if she dies).

Answer #2 (Reish Lakish): It is [even] to annul her vows.

(R. Ze'ira): Even though Reish Lakish said 'to annul her vows', he agree that he cannot annul for her until she enters Chupah. (Reish Lakish teaches that her father can no longer join to annul her vows. IMREI BARUCH - mid'Oraisa he can annul. Chachamim are stringent, just like they forbid a Kohen's wife to eat Terumah before Chupah, lest she have a Mum that invalidates the marriage.)

Support (for Reish Lakish - Beraisa): "Liznos Beis Aviha" - this excludes if the husband's Sheluchim handed her over to the husband's Sheluchim. She is not stoned (like an Arusah), rather, she is choked (like a Nesu'ah, for this is not called Beis Aviha. A father joins to annul her vows only when she is in Beis Aviha. We explained this like PNEI MOSHE.)