what did Percy learn about Grover and Annabeths first quest

While on the ride they discuss many things, including Thalia's death, Grover's involvement with her death, and the ring that Annabeth wears around her neck. She says that the ring is from her father who has remarried and wants her to come back. Annabeth says that she tried last summer to do that but monsters smelled her and attacked. She has written her mortal family off. Percy urges her to reconsider.