"Are you in Dundee, Rachel?"
Translation:A bheil thu ann an Dùn Dè, a Raonaid?
And because it's not marked in writing that means that it gets treated as unlenitable as far as the written rules of Gaelic are concerned. For example, we write
an reul, not
a' rheul'the star, the asterisk'
an t-sraid, not
an sraid'the street'
Both of these would be different if r counted as lenitable in writing - of course what people actually say may vary as there is bound to be confusion.