What western movie from the late 60's early 70's had Raquel Welch playing a Mexican woman?

The main characters were cornered in a cabin and surrounded and were grossly outnumbered. I think is was Raquel Welch. The female character burst out of the door with a pistol in each hand in an act of defiance with both pistols blazing.

I thought it was in a John Wayne movie. I searched over thet weekend and had no luck. I am usually pretty good at finding things - I did not find the scene or confirm the movie and the actress. I know I saw the scene in the movie.