I would not be able to say anything. I would say thank-you. Meaningful pics are personal. T is full of boundaries and I would be afraid of crossing some unknown boundary if I asked for another pic. I would learn to make eye-contact and remember her face and eyes. Old T made me practice eye-contact and current T has asked me to make eye-contact. People tend to look different the more we look at their picture, so I would keep trying to look at the pic and tell myself this is the one pic she picked to give me.