My instinct would be not to give a gift for her child. I think a T needs to keep her home life separate from her professional life. To do the job she needs to be able to switch off. It feels intrusive to me to give her something that she would have in her home that relates to you. The pie idea sounds nice. I think if it was my last session, I would choose to have quite a quiet session, and try to share some of the emotion I was feeling and hope that she could help to comfort me.