Broken ankle skiing please help?

i fell over on may 24th and fractured my ankle, there was also an old fracture. it was put into a boot thing which i can take off at night and for showers and on june 23rd i got back to the hospital for essment and they will hopefully take it off... my friend has asked me to go skiing with her at the end of july and i really really reaaaaaaally want to go and my mum said if the doctor says my ankle will be 100% ok to skii on by then i can go. do you think skiing on it is a VERY stupid idea?what do you think the doctor will say and is there anything i can do to make my ankle stronger/better to skii on by the time i go back to hospital?