Doctor Christine Palmer is a surgeon and former colleague of Stephen Strange. She was his girlfriend until they broke up due to his egotistic personality but they still remained friends. She helped him after his accident left him without the use of his hands until she could no longer watch him ruin his life. 
After a year She operated on Strange after a battle with the Zealots and reunited. 
Later she tried to save Ancient One but couldnt. She moved on and eventually met Charlie who she married.