Does the suckling mentioned between the suitor's mother and the fiancée's mother necessitate prohibition (of marriage)?

The suckling that prohibits marriage is five full, satisfying sucklings, according to the more preponderant opinion. So, if your mother breastfed your aunt five full, satisfying sucklings or more, then you are not permitted to marry your aunt's daughter, because she becomes your sister's daughter through suckling. However, if the sucklings were not full and satisfying, then that girl is not forbidden to you, based on the opinion that is given fatwa. Nevertheless, refraining from marrying her is more cautious in order to avoid the disagreement among scholars.