Rif Yevamot 12a {Yevamot 38a continues}

12a

{Yevamot 38a continues}
Mishna:

שומרת יבם שנפלו לה נכסים מודים בית שמאי וב"ה שמוכרת ונותנת וקיים
מתה מה יעשו בכתובתה ובנכסים הנכנסין והיוצאים עמה בית שמאי אומרים יחלוקו יורשי הבעל עם יורשי האב וב"ה אומרים נכסים בחזקתן כתובה בחזקת יורשי הבעל ונכסים הנכנסין והיוצאין עמה בחזקת יורשי האב כנסה הרי היא כאשתו לכל דבר ובלבד שתהא כתובתה על נכסי בעלה הראשון

A woman waiting for the yavam {to perform either yibbum of chalitza}, to whom fell possessions {as an inheritance}, Bet Shammai and Bet Hillel both agree that she may sell it or give it away as a gift, and that act legally stands.

If she dies, what should be done with her ketuba and with property which goes in and out with her {nichsei melog}?
Bet Shammai say: The heirs of the husband should split it with the heirs of the {her} father {since the levirate bond in waiting is a doubtful bond, such that it is split}.
And Bet Hillel say: The property stays in their assumed state {status quo} - namely, the ketuba is assumed to be in the possession of the heirs of the husband while the property which comes in and goes out with her is assumed to be in the possession of the heir of her father.

If he {the yavam} marries her, she is like his wife in every respect, except that her ketuba is to collect from the property of the first husband.