Where was Marta from?

At various times people said, Equador, Paraguay, Uraguay and Brazil.

At first I thought this inconsistency would be picked up on by Benoit Blanc, perhaps suggesting her being here illegally.

Since it was ignored, I thought it was just a commentary about the phoniness of those who professed that she was like family but didn't care enough to even know where she was from.

In the end, I think it was just another red herring and a comedic element.

it was inconsistent.

it seems pretty clear to me that this was here to underscore the phoniness of the family, who told her how much she was valued when they hadn't made the effort to really get to know her.

I thought she was born in the U.S and that her mother was technically the only one from a foreign country.

It's to show what deplorable horrid racists they are because they can't keep straight in their minds which random third-world craphole her family came from.