Not quite that simple I fear. The norm here, your diocese may differ, is for lections of the day including resp. psalm and acclamation. The orations should be for St Lucy, and the entrance and communion, if spoken, likewise for Lucy. All this is laid out, though coded, in the diocesan Ordo. So, its one ribbon in the Lectionary (for the day, but celebrant has choice), and one in the Sacramentary (for St Lucy), given that, I would go with Lucy for the GR marker.Talk to the priest, and see which readings he will be using.
Incidentally, I recall noticing a rubric specific to saints mentioned in the Roman Canon, but have forgotten what it related to. ¿was it a recommendation of EP1 in such cases?
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