No one can really say if he will make it or not. Sometimes they do pull through, sometimes they don't. You may have to explain to your daughter that medicines do not always work and sometimes not life saving. I have seen snakes go through this and make great recoveries, but a friend of mine spent a lot of time with our vet and the snake had to be put down, it really depends on how the snake reacts to treatment and how far gone the snake already is. Good luck and I hope everything works out.