If anyone else is as confused by this page as I was: one of Marisa's three sunflowers is missing. I'd assume she met Koishi first, gave her one and then took the rest to Satori, as implied by the next page.
Probably at page 10 where Meiling wondered if she talked with someone.
Damn, I wondered about that one too but somehow failed to make the connection.
OhOooo~Koishi......Is that so.She wanted to show them to her big sister.These flowers are from Koishi.How scary~It seemed like sunflowers were unusual to her.
Who are you calling "oneechan"?
I figured I'd help out.How about a glass in return for the errand?If it weren't for these flowers, you would've lost your head.Saves me the trouble.Oneechan