Wow that is really tough! I'm going to give an answer I found through reading about adoption..(I know it's not the same) I would say pictures is good and some things in a small box that she may find important that are hierlooms (if any) would be nice. Do you keep in touch with his side of the family? Grandparents, etc. they may be able to help answer questions as well when she's older so if they are still in contact I would keep that up. I'm so sorry for you and your future together now being squashed...
