From Nookipedia, the Animal Crossing wiki
Normal villagers (also known as sweet or sweetie villagers) are female characters in the Animal Crossing series. The name comes from their neutral opinion on things such as hobbies and other characters such as the player, villagers, and special visitors. They are the female equivalent to the male lazy villagers.
Normal villagers, despite being called "normal", are known for their sweet demure and naivete. Due to their all-around kindness, they get along with most villagers, even the ones with cranky and snooty personalities. They are also bookworms, and often discuss what they read with the player, as well as good cooks, often stating what snack would fit their mood. In this respect, they are the female counterpart to Lazy villagers.
They usually go to sleep at 1:00 A.M. and wake up at 5:00 A.M. (In Animal Crossing: New Leaf, they instead go to sleep at 12:00 A.M. and wake up at 6:00 A.M.) According to them, they wake up so early because they believe sleeping is unhealthy (in actuality, the opposite is true). They are very rarely (if at all) angry and tend to take insults and disappointment easily, but will apologize even though they may not have done anything.
Below are some (not all) quotes made by normal villagers.