Ilmarë's answer is satisfactory. In days, maybe even hours, her word would either be disproven or confirmed, and, if what she says is true, Daugo would be on his way home...
But what would he be coming back to? Pomona owned their little Breelander hobbit-hole, so he would have no roof to return to. Bree most likely regarded him as a murderer, and half the Shire knew him to be a conman. Buckland might provide a grudging home, but all his savings were in Bree, with his whore of a wife.
Dismayed, he comes to the realization that there is simply nothing for him there, save his children, and every day he spends on this island is months, years away from them in which the memory of their father will fade from their minds. He has nothing.
It is with moist eyes and a half-hearted manner that he acquiesces to what the shifters are telling them all. He trudges behind Ilmarë in a black mood, sullen and depressed.