Nettie's next letter says that she has settled in with Samuel and Corrine (the Reverend and his wife). Nettie wonders whether Celie will read Nettie's letters and respond to them, but she thinks that it is perhaps too soon to receive a letter from Celie.
Nettie repeats that Celie's two children, being raised as adopted children by Samuel and Corrine, are named Olivia and Adam. Nettie promises to take care of these children in Celie's absence.
It is saddening to think that Celie receives confirmation that her children are alive many years after Nettie arrives in the Reverend's home—but at least she is able to find out at all.