Gaelic is one of the oldest languages on earth, but it is also fighting a battle against extinction. The sad truth is that native speakers are growing older and passing away. The survival of the language depends of people who are learners and most native speakers are now aware of this.
They are mostly thrilled that anyone shows as much interest as does Sue.
There will always be a few who differ of course, but that should not be a discouragement. However the tradition is sacred to many and that should be respected by doing our best.
The ear of a native speaker hearing a song works differently than someone used to English as well. Rhyme and meter is quite different and most traditional singing was without instruments. Today Gaelic singing style is changing and that in itself does not always sit well with native speakers.