I am still trying to understand that lady,s accent .
Why has Catriona got an h in it this time?
Because you are speaking to her, not about her. It's in the lesson notes under vocative case.
I'm using the app. I don't think it has notes.
You can see them in the browser version (also on mobile browsers on smartphones) and also there: https://duome.eu/tips/en/gd
And the link to the actual section is
I LOVE the way this speaker says "Catrìona" and "Chatrìona!" She makes the name sound so magical. I with she narrated audiobooks or something!