The one who Hisa had dubbed the "Star of the camp" is Yumeno Maho.
Saki is awed as Maho shows off her ability to copy the play style of all of the players of the Kiyosumi mahjong club.
I guess they do look a little similar...
...أظنُّها متشابهة قليلاً
Ich schätze, sie sehen
 sich etwas ähnlich...
Supongo que se parecen...
Supongo que se parecen...
Je sais bien que ça se ressemble,
 mais quand même…
Beh, in effetti una certa somiglianza c'è...
Eles são meio parecidos mesmo...