In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
Q: Passage: Richard and Rachel are a childless middle-aged couple desperately trying to have a child. After multiple failed attempts at artificial insemination they attempt in vitro fertilisation where they learn that Richard has a blockage that is not letting him produce sperm forcing him to choose a quick surgery and go $10,000 dollars in debt to his brother Charlie and Charlie's wife Cynthia. At the same time they are also attempting to adopt a child after having previously being matched with a pregnant teenager from Little Rock who was looking to give up her child and then stopped contacting them.
After the IVF fails their doctor floats the idea of using a donor egg to inseminate Rachel which would raise their chances of success from 4 to 65 percent. Rachel is initially against the idea, but slowly begins to contemplate it with Richard's encouragement.
Cynthia's 25 year old daughter, Sadie, meanwhile decides to leave her college writing program to finish in absentia and go live with Richard and Rachel, with whom she is already very close. Rachel, who struggled with the idea of an unknown egg donor, decides that she wants to ask Sadie for her eggs. To their surprise Sadie quickly agrees, both because she loves Richard and Rachel and because she thinks the egg donation will bring meaning to her life.
Sadie informs her mother she will be donating her egg during Thanksgiving, much to her mother's displeasure. Despite the fact that Richard and Rachel tell Cynthia they will not go through with the donation without her consent, they decide to go through with pre-screening.
A:
What is the name of the person Sadie informs she will be donating her egg during Thanksgiving?