A daughter of my mother's wet-nurse, did she breastfeed from my mother? So, is it permissible to marry her daughter?

If the questioner's mother breastfed the girl's mother five times, then the girl becomes his sister through suckling, and therefore it is not permissible to marry her, due to Allah's saying: "Forbidden to you are your mothers and your daughters and your sisters," and due to the Prophet's (peace and blessings be upon him) saying: "Suckling prohibits what lineage prohibits."