"Still, I was quite shocked when Melissa called," Bain said yesterday. "I'm still only 16 so it's a big thing going to an Olympic qualifier, and it will be red-hot competition. I'm just hoping I'll acquit myself well.
"It'll be harder for us to qualify a spot but the boys definitely have a chance."
Bain will spend 10 days back in New Zealand after China before turning around and doing it all over again when she and Bethlehem College's Beniece Douch, the national under-19 champions, fly to Cyprus for the youth world championships in Larnaka.
If that's not enough to make her head spin, Bain is also trying to do her NCEA studies justice, with Year 12 an important year when applying to get into university courses in 12 months.
"It looks as though I'll be working harder on my schoolwork when I get home in late July," she said.
Bain knew Ruru well before last month's SOS but the pair haven't played together, with 17-year-old Douch her regular partner on the beach circuit last summer.
"It's a small group of people so everyone knows everyone anyway. Melissa's the man when it comes to women's beach volleyball so she's easy to play with."
While Douch and Bain continued to train after the summer series of tournaments, with a fifth placing at the national open their highlight, she and Rotorua-based Ruru have had to cover a lot of ground in a short space of time to get ready for China.
They have been training together once a week.
Bain is also hoping to feel the sand of southern France beneath her toes in between indoor commitments with Tauranga Girls' College.