I would not jump to conclusions that your daughter had an overdose of Botox. You have not described the areas of facial weakness and it could very well be that rather than too much Botox, there was a small amount placed in an inappropriate location which affected a muscle group that wasn't supposed to be treated, or her anatomy is slighlty different than normal and the appropriate location of her injection affected her misplaced muscle (I would guess it would be the former). If there was treatment of the crows feet and the injector treated too far towards the cheekbone and under the eye, then the smile muscles could be affected on that side and her cheek and lip will fall on that side. In this case when she would smile or speak it would look obvious as the other side would elevate but not the side of the Botox. The similar effect can occur when the bunny lines of the nose are treated too far down on the side of the nose. If the DAO muscle is treated to elevate the corner of the lip, but the injections is done too close to the lip then the other side would lower when opening the mouth but not the treated side. In these cases of asymmetry, the other side can be treated with botox to create an equal relaxed look but function is further impaired. The result does wear off around three months.