#18 displayed nothing impressive in the manga beyond defeating Ribrianne, who had already been weakened by her realization that #18 was married to Krillin. #18 was having noticeable trouble with Ribby's special attacks prior to this turnaround.
Ch. 36, pg. 21.5-6
Context: after #18 survives Ribrianne’s barrage of special attacks
Beerus: “Crud… These ridiculous attacks are actually pretty strong…!”
Pell: “Well done, Ribrianne! I don’t get that logic, but you’re as strong as you claim!”
Ch. 36, pg. 26.2
Context: Ribrianne’s attacks are becoming noticeably weaker after finding out #18 is married to Krillin
Rozie: “Oh no… Lady Ribrianne’s beauty is wavering!!”
Note: Since beauty is linked to strength in Universe 2, I figured this was their way of saying Ribrianne’s power was waning and thus included it here.
I didn't see anything indicating Ribby was Super Saiyan tier or such, and nothing indicating #18 had gotten much stronger since the Boo Saga, so to me they're about "android tier."
Base Caulifla stomps #18, let alone SS Caulifla.
I don't know about the anime.