Is a sacrifice (hady) obligatory for the two girls, and what redemption (fidyah) is incumbent upon my aunt and her two daughters?

The pilgrim must spend most of the night in Mina. If he fails to do so, he must feed a poor person for each night. As for the compensatory sacrifice (dam), it becomes obligatory if he leaves the overnight stay for three nights.

There is nothing upon your aunt for her failure to stay overnight in Mina on the first night, because her presence there from 7 PM to 12 AM is a valid overnight stay. Even if it were not, the loss of her belongings is an excuse.

Whoever abandons the farewell circumambulation (Tawaf al-Wada') must offer a compensatory sacrifice (dam), even if they are from Jeddah.

If the female pilgrim did not shorten her hair due to ignorance or forgetfulness, she must shorten it immediately upon remembering or learning. If it is too late, she must offer a ransom (fidyah) to be slaughtered in Mecca and distributed among the poor if she is able; otherwise, there is nothing upon her.

The sacrifice of Hady al-Qiran must be offered for the two girls if their Hajj was Qiran and their Hady was not sacrificed. However, if their Hajj was Ifraad, then there is nothing upon them, and there is nothing upon them for abandoning some rituals.