This girl got away easily. Islam is clear about the punishment for leaving Islam (apostasy): death.
Via AHA Foundation:
NAIROBI, Kenya, August 11 (CDN) — A 14-year-old girl in western Uganda is still unable to walk 10 months after her father tortured her for leaving Islam and putting her faith in Christ, according to area Christians.
“He locked her up in a room of the semi-permanent house for six months without seeing sunlight,” the pastor said. “The younger brother was warned not to tell anyone that Susan was locked up in a room and was not given any food.”
[Her younger brother] said that when their father was away, he roasted bananas for his sister. “I also dug a hole under the door, where I could pour water through,” he said. “My sister could drink the water using her tongue. But most days she could only feed on mud.”
“The miserable young Susan was bony, very weak, and not able to talk or walk,” said the pastor. “Her hair had turned yellow, she had long fingernails and sunken eyes, and she looked very slim, less than 20 kilograms [44 pounds].”
“By God’s grace Susan is still alive,” [the Christian pastor] said after a visit last week. “Though she can’t walk, she can now talk. She is still feeding on soft foods. The great news is that Susan is still strong in the Lord Jesus Christ. She needs prayers and support, so that she can resume her education soon.”