Here is the track list for "A Gaelic Christmas", copied from AllMusic.com:

1 Dia Do Bheatha/Trí Long (Hail God/Three Ships) 3:56
2 Do'n Oíche Úd I Mbeithil (To That Night Long Ago in Bethlehem) 2:57
3 A Oíche Bheannaithe (Oh Holy Night) 3:34
4 Leanbh Sa Mhainséar (Child in the Manger) 3:28
5 Muire Agus Naomh Seosamh (Mary and Saint Joseph) 3:16
6 Seacht Suáilce Na Maighdine Muire (The Seven Joys of Mary) 4:28
7 Carúl Loch Garman (The Wexford Carol) 3:18
8 Suantraí Na Maighdine (The Virgin's Lullaby) 2:32
9 A Leanbh Ghil Mhilis (Oh Sweet Bright Child) 3:31        
10 Bí Thusa Mo Shúile (Be Thou My Vision) 3:16
11 Dán d'Oíche Nollag (Christmas Eve Hymn) 4:34
12 Oíche Chiúin (Silent Night) 2:57
13 Suantraí an Chríost (The Christ's Lullaby) 2:52

Maybe we can help you find lyrics for some of these songs on the internet or in old books. At her web site Mary says some of the lyrics are her own translations from English to Irish; in other cases, she found old poems and set them to music. Unfortunately, she doesn't say which ones.