Ah, I hadn’t read the tosfos. Didn’t realize tosfos had explicated the problem was Deni.
Also, I made a mistake–her name was not Kilonia, it was Kalinia.
Anyway, the answer is that the ri holds eishes ach shelo haya b’olamo falls to yibum if already pregnant, but, does not receive yerusha. We learn it from naami “gam halayla hayisi l’ish”