Saying goodbye

Hello, I am new to this forum,and at the very beginning of this journey. My daughter (13months) is going to be adopted very soon. Tuesday is the last time I will see her. Does anyone know how I can say goodbye to her? I'm worried about getting upset and so making her upset. I love her more than anything in the world and am not sure how this is going to affect me. I just wish I could turn back time so I don't have to say goodbye yet ... Is there anything special we could do for our last contact together??