Girl A gives gril B some baby clothes, for girl B is expecting her baby. Girl A is afraid, however, that gril B will not like those baby clothes. So she says to girl B, "If you don't need it I can just put it in the Missionary Bale."
I just am not sure what the Missionary Bale refer to here.
There are about 25 Google hints. I think it may be a typo or scanning error for Missionary Sale which has 333 hits.
In either case, it seems to be an church-held event for raising money for missionaries. People donate unwanted items (put them in the sale) to be sold at the event.