I'll pray for you and your family.
I hope everything turns out ok for you :(
It's a shame that prayer wont work :(, I know you mean well... but there is no scientific evidence that proves god exists.
EDIT: Wtf guys I'm just sharing my opinion about whether or not praying is worth the time, I mean no disrespect to the OP's family, they need all the support they can get and I sincerely hope that they win their battles with cancer.