It makes me wonder….
How many times did the TARDIS allow a breech between the CAL interface and her own? How many times has River walked into the TARDIS, long after her death, just to see him? Just to watch him? To lay down next to him while he sleeps; just to be near him? Near her husband who…

Doctor: Becaue I thought it would hurt too much
River:I believed I could have coped.
Doctor. No. I thought it would hurt me.