Welcome to ireland Reaching Out!
I assume the 1925 death record gives no parental clues?
I checked the subscription site Roots Ireland and their were no sibling baptismal records for either Mary listed in your note. Also, no marriage records for the parents.
The free site www.irishgenealogy.ie has images for civil marriage records from 1870 on and death record images from 1879 on. We have an expectation that images for records back to 1864 may be added in the near future. However, you are researching one of the most common names in Ireland (Mary Kelly) and trying to determine if you have a record that ties to one of the two you listed, it likely an impossible task.
I would consider DNA testing. Maybe you will match someone who has either Cassidy or Hoey connections and will help you confirm which Mary Kelly record is correct.