@cruisemust was the lump on the same side?

Right now you are worrying about all possible outcomes and once she has/ you have more information the worry will be more specific to the actual situation.

Obviously you are supporting her. Distraction (Netflix?) and exercise help a lot during these times of waiting and when needed, a small Rx for an anxiety or sleep med. In my opinion, waiting for results of initial testing can be the hardest time when dealing with cancer.

I am sure you are not crying in front of your daughter. No need to be cheery either. She knows you care.