She's an interesting case because I believe I found that the name was originally Cavanagh. This is what I have:
Philomene Cabana b 23 Feb 1842 at St-Hermas, daughter of Charles Cabana and Julie Fortier, m 26 Oct 1858 St-Louis-de-Gonzague Pierre Vezina; she died 20 Mar 1875 at St-Louis apparently giving birth to a stillborn child because on the 21st they buried the child and on the 22nd they buried Philomene.
Finding the rest of the ancestry was a bit of a challenge because the name was spelled a variety of ways as it morphed from Cavanagh to Cabanac to Cabana...but the name was so interesting that I wanted to follow it back.
Charles Cabanac, son of Jacques Cabanac and Louise Amable Rouleau, was baptized 2 Jun 1800 in St-Eustache and married Julie Fortier 26 Jul 1824 at St-Eustache.
Jacques Cabanac married Louise Amable Rouleau 24 Oct 1796 at St Eustache. The entry says he was aged 30, the son of Jacques Cabanac and Catherine Gauthier of the parish of St Laurent. Jacques was baptized at St Laurent 18 Jul 1767 at the age of 2 1/2 - the entry says the baby is the son of Jacques Cabanach "hirlandais de nation" who was by then deceased. He evidently had an older sister also who was married in 1780, and also a brother Pierre born in 1761 who must have died as he does not seem to turn up anyplace else.
Jacques Cabanac married Marie Catherine Gauthier on 4 Feb 1760 in St Laurent. He was the son of Jean Cabanac and Marie Anne "Blenier". This marriage is very hard to read in the original, I think it calls him "hirlandais". According to PRDH he was born in Dublin, so at this point he was probably "Jack Cavanagh" and I bet his parents were John Cavanagh and something more like "Mary Ann Blaney".
If you have access to bms2000.org you can find all of Philomene's siblings that were born in Ste-Scholastique and possibly St-Hermas also - The siblings born between 1837 and 1845 were born in St-Hermas and the rest were born in Ste-Scholastique 1826-1835 and then one in 1847. Or you can search the registers here. It's a lot to type out! and it's not in my personal tree, I was looking it up for another purpose so I can't just link you to it.