Balleyhickey?

Hello from Minnesota, USA! I'm looking for my Irish ancestor's hometown passed down through generations of family lore as "Hickey" in County Cork, but there seems to be no Hickey, only two Ballyhickey's, in Clare and Tipperary.

My ancestor was Margaret McCarthy (born about 1833). She lived in Minnesota during the frontier days when Minnesota had just become a state and was married in 1857 to Christian John Abresch (Prussian).  I haven't found her marriage record yet as these are very early records in our state and scarce. I did find her burial record in the Catholic Cathedral of St Paul, Minnesota's microfilm records. She died in 1863 after giving birth to her third child in April 1863. The baby lived 4 months and was buried with her in the Cathedral's cemetery. No other death record found. I am going to check again for Catholic marriage records.

Her first born was a son, William Cornelius Abresch. Her second born a daughter, Katherine Abresch. The baby, Charles died. All children born in Minnesota.  Her husband remarries less than 5 months later to another Irish girl.

Margaret seems to be here in Minnesota all by herself as I haven't yet found any other record of her before marriage. No earlier census, no immigration record. So I don't even know if she had any other family with her in Minnesota or the United States.  I will keep looking here but I thought maybe I would try reaching out to Balleyhickey and see if I could find her there first as I am having little luck with pioneer records here. Any information about Balleyhickey would be appreciated. Thank you.