"A hint?" It's probably best, that Frisk doesn't press about 'not repeating', yes.

There is a reason Reira triggered the feeling of 'Kinship' in Flowey. (Even if she herself is still a bit baffled by it) "...I think it's ok!" she decides, more than happy to provide. "Um..."

"...What kind of hint though..?" she adds, frowning. If it's to get to the moon, she certainly can't help with that one. She isn't really sure Frisk is allowed up there after all.