Your message said that "part of it was in stage 4". I am not trying to alarm you, but Stage 4, at least in most of the cancers I've read about means that it has spread to other parts of the body. It's important to ask them to to do scans of all possible affected areas.
When my mother was diagnosed with stage 4 lung cancer, I started researching immediately. Look this website or cancer.org and read the specific cancer type and its staging.
My heart goes out to you and your daughter. Stay positive and pray a lot. Read and research. People do beat this. It is possible.
-R