What is being FORESHADOWED between Frenchie and Rose? List 2 hints.

“It means good.”
It was Rose. She’d caught up to me, even with the added weight of
RiRi’s roll attached to her own with a fraying bungee cord.
I looked at her, a question in my eyes.
“Nishin. It means good.”
I kept my eyes on the trail ahead. I didn’t mean to, but I said it anyway.
“So?”
“Sooooo,” she said. “If you want to know what Minerva tells us, I’ll
share.”
I took three strides before I could answer. “Okay.”
“Okay?”
“Yeah, okay.”
She punched my arm. I couldn’t help but smile. I wanted to say her
name, to feel it rumble past my teeth.
“Yeah, Rose. That sounds nishin.”