Wendy is a playable character in the game Don't Starve. Wendy is one of the weakest characters in the game but she comes with a friend: Abigail. Abigail is a ghost who protects Wendy. She can be summoned through the use a special flower that Wendy has. Once used, Wendy loses a little Sanitybut then Abigail will defend Wendy. She will attack any non-pet creatures (and does more damage at night) and won't hurt Wendy. She regains health after being damaged and when she dies, she leaves the flower so she can be summoned again (after a cooldown).
Likely because of her comfort with Abigail, Wendy loses Sanity slower than other characters.