Original: Duval, the grandmother of Villars' ward, Evelina Anville, intends to visit England to renew her acquaintance with her grand-daughter Evelina.
Simplified: In the letter, Lady Howard says that Madame Duval (the grandmother of Evelina) is going to visit England to see her granddaughter Evelina again. In his reply, Reverend Villars tells her about Evelina's history.