You tell Moonflower that it's a little too soon to head back into the forest with Windcaller, but going to the lake sounds like a good idea.

Moonflower: "Yuh uh! There's a lil' beach on the south shore with stuff we can do. I bet there's more ponies there when it's day!"

While on the subject, you ask Moonflower how she is adjusting to daylife.

Moonflower: "I'm havin' fun! And the nights aren't bad, either. Heehee... Oh yeah! By the way, I got some poison jokes in my bag, so if we can find some fire peppers, I can fix us some mare's poison! Y'know, just in case."