Wait, I don't get this being an obvious reference to Rose.

For one it was New Years Day he saw her on, not Christmas.

Second; it was established in SJA that he saw all of his past companions before he regenerated, not just the ones we saw. So I get this being partly about Rose but just as much to the rest of the people he was close to in his long, long, loooong life.

Unless I'm missing something. ^_o