Hi and welcome to the club nobody wanted to join. My wife's cancer is a bit different as she has Leiomyosarcoma and we have been living with cancer now for 6 years.
There is quite a lot of information on the main site about Rhabdomyosarcoma that might be helpful to you both.
One important thing I found though was learning to look after myself too, it can be quite challenging and we have some pages on Looking after someone with cancer. I did a living with less stress course that was incredibly helpful to me.
<<hugs>>
Steve
