I think I'd be tempted to bring them home. It's not as if the Reimu is begging to be taken home -- she just wanted to save her baby, then wants to leave.
"Yuwaa.... Thank you big sis.... Reimu won't.... won't bother big sis anymore.... yua.... Reimu will hide with little one in a place that big sis can't find, soo showwriiaaah...."
Knocking her head against the ground, Reimu apologized to miss for bothering her after the Komarisa was healed.
knocking-head = kowtow