When the swelling has gone down and bruising disappeared, buy her a wobble board. They're not expensive and they are very effective. The body has tiny sensory nerves called proprioceptors. These proprioceptors sense where parts of the body are. If you have ever started to twist your ankle and it has automatically righted itself then this will be the proprioceptors working efficiently. If a person sustains an injury to the lower leg then the proprioception of the leg can also be damaged. This will mean a possible chronic weakness developing and therefore an increased risk of re-injury, as seems to be the case here. Just a few minutes balancing on the board each day can help strengthen both ankles, restore damaged proprioception and prevent injury.