Mother's room at Bramlage for basketball game days is located in the administrative offices behind the Ticket Office on the Southwest corner of the concourse.
Many of the event staff workers will not know where to direct you when asked, so you need to just go back to the entrance of that office area and speak with the folks in the offices. They will let you into a comfortable, locked area with a couch and outlets. This area is designated for nursing and pumping during games, so there is not additional foot traffic.
It was a bit of a makeshift space as the facility is older, and doesn't have a 100% all the time truly dedicated space, but it was comfortable!