I actually think she "handles" the ball too much at the top of the key, and then is forced to take that jump shot when she can't make a pass she is comfortable with (especially against a zone defense). Perhaps those zone defenses aren't giving her much room to drive. On Monday, not even Lashann was able to penetrate much.
Joyner needs to be the player that others are feeding the ball to down low, and not the other way around. Granted, mixing things up is fine, but the bread and butter for her game should be shots from very close to the basket. And, without Kelsey in the game to help rebound those missed jumpers, it was one and out way too often.