There were several reasons for his going to the women first. God said: "When I created the world, I gave My commandment concerning the forbidden fruit to Adam only, and not to his wife Eve, and this omission had the effect that she tempted Adam to sin. Hence it appears advisable that the women first hear My commandments, and the men will then follow their counsel." God, furthermore, knew that women are more scrupulous in their observance of religious percepts, and hence He first addressed Himself to them. Then, too, God expected the women to instruct their children in the ways of the Torah, wherefore He sent His messenger first to them.
Why God Gave the Torah to All Israel Not Just Adam
Legends of the Jews 2:30