Concern about someone or something in a dream can reflect worries or concerns in your waking life.
If you dream that you are concerned about someone’s health, you could be worried about someone’s physical health, or about the health of a relationship or of a project in waking life.
Worries about a friend or family member can represent worries about a quality that this person represents.
For example, if you have a have a hard-working daughter, a dream that you are worried about her can mean that you are worried about your own ability to work efficiently and produce good results.