Kiah doesn't know how good she is. She is happy getting rebounds and blocks and just be part of the team. Until Stef graduates she will not assert herself. She is deferring to others to control the game. Sort of what happened with Stewie last year during her bad spell. (now Stewie just plays hard and doesn't get down on herself when she missed shots).
Until she realizes that she can dominate a game with her talent (Geno once wondered why she doesn't shoot more often when she was making like 20 in a row in practice during her freshman year) and that can happen anytime, and plays mean and hard and takes criticism by playing even harder and not be afraid of mistakes, she will remain a talented backup. She is still a joy to watch and her defense is incredible.