As far as I'm aware the term "indigenous" is purely a descriptive term that doesn't in itself carry negative or offensive connotations. Obviously context within a sentence can change this, but referring to Aboriginal people as indigenous is not (in my opinion) offensive. Was the woman at the meeting of Aboriginal heritage? Seems strange to me!

ETA: The banner ad at the top of the page says "Raise your hand to help indigenous kids" - so another example of it not being offensive
Yeah she was she was an elder.
They were all getting a bit feisty so I didn't feel comfortable asking te question then and there