Sooner Mall has a semi-private nursing mother's lounge for moms to breastfeed or breastpump.       

Review from mom Karie D.: "Family restrooms adjacent to the "women's nursing lounge" which was small but private. Lots of semi private seating (last pic) and 2 additional changing tables where a parent could change one & still keep an eye on the stroller or the toddlers. I also felt like it was a brilliant coincidence that it was extreme close to the children's play area with more seating!"