Given her expression, I don't think I even want to know.

Seems to be painful.

Suika is having wanker's cramps. Almost as bad as Bakura but not that much.

Bansho said:
nothing here to translate that you probably aren't already imagining...

By which I mean there are no words, but just vocalizations...

if you're that curious, it's a quick grunt, followed by a pant, and then a long moan...