When you frolic with the little lost cub in explore, his aunt comes and finds the two of you playing around. She then appears smitten with you... but she's still no easier to claim than a normal lioness! I think that she should maybe start off with around 3-6 hearts, maybe a random chance to decide how much you swooned her with your steaming hot fatherly instincts... But, in short, I think that these ladies should really show how charmed they are.