Masned, Welcome to the site. Sorry you need to be here. Hope we can help. When I was in treatment, especially at the end of radiation, the phlegm was a big problem. Had vomiting and bleeding issues, peg feeding issues, etc. I didn't know enough to try anything to solve the problem. Just dealt with it until it went away. This occurred about the fourth week after the end of rad treatments. Will pray your daughter finds a way to deal with this as it is important for her to finish the treatments.