Having been directly invited to the midnight Mass, and having faithfully attended at Darcy's side for others, Helena shows up to listen then with rapt attention, and will remain with her even after. If she starts to doze between midnight and dawn, that's okay, and she'll rouse herself to rejoin everyone then, wanting to hear what Mulcahy has to say and to be supportive, even in the smaller numbers.

But she does not return for the last Mass, having been left to fall properly asleep in the house after a good breakfast. Hopefully the good Father doesn't mind, she's just tired herself out from being excited for the holidays.