For better or worse I agreeHonestly if we look at all the other universes participate in the tournament that isn't 6 7 or 11, it would be fair to say that Ribrianne is probably the most memorable out of all the fighters. It isn't saying much mind you considering circumstances, but at least we've seen her do something in comparison to U9 falling over dead in one episode and U10 getting picked off randomly. I can't even recall any fighters in U3 or U4 worth talking about while U2 at least has had some memorable characters (and one of them almost got brutally murdered by Frieza, so there's that. Hell, you'd think that Ribrianne would go after either 17 or especially Frieza after what happened. Going after Goku just feels silly if he hasn't really done anything as drastic as those two in comparison).
She's comedic reliefWhat is Ribrianne adding to the story at this point? Nothing, she just interrupts the thing you do want to see. Started great, but yeah, super overstayed her welcome.