It’s not in a major key either.
If you’re looking for THE Fermoy Lasses and end up on this page, you may want to go instead to https://thesession.org/tunes/219. The Piper’s Glass has a second part that is obviously of the second part of The Fermoy Lasses, but the first part bares no resemblance.
I did submit a recording (Frank Sears) using the title "Fermoy Lasses" instead of "The Fermoy Lasses". It seems this detail (THE) is the culprite.