Is it permissible to marry a girl who was breastfed by my mother two or three times, with non-satiating feeds?

The summary of the previous fatwa is that the preponderant opinion is that less than five sucklings do not establish a prohibited relationship (mahramiyyah). Therefore, it is permissible to marry the person you mentioned, although it is more pious to refrain from doing so for those who hold the opinion that a single suckling establishes fosterage. The definition of a suckling is when the infant takes the breast into their mouth and then voluntarily releases it.