Well she could actually sing, and was actually interesting so yes the show will miss her in my eyes.
However I'm not surprised that the public wouldn't vote for her because of those reasons above, there's a weird thing against Rock and Indie on this show, Rock gets classed as shouty, and Indie gets classed as dull, no matter who's singing those genres there'll be people branding them as those things, especially if they're female so Sam did well to get to week 6, even if we have to put up with generic 5AM performances going forward.