Hmmm, tough situation. If the ricer is a diamond or 10, Rumia wins, if anything else, Cirno. Could really swing either way...
If they're the only ones playing the chance of the river being either a diamond or ten is about 26%, but of course Texas Hold'em usually has more than two players. Of course, Rumia can't see Cirno's cards so she doesn't know what she needs to beat her. Cirno is exactly the type who could easily go all-in as a bluff.
Think people are missing the point. Crino is holding a Pair of Nines and a Nine on the table. She has the Strongest Hand. -gives you all a minute-. Figured it out?