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: Celia Amonte is a Portuguese American widow who lives in New Bedford, Massachusetts with her daughter Vicky; her late husband was a fisherman lost at sea.    Vicky sneaks out of the house to go to a casino, where she meets Charlie Beck, a British card counter, and attempts to convince him to teach her his trade. Charlie is apprehended by the casino staff, and told that he can either work to find other card counters, or be banned from the casino.  After accepting a ban, Charlie meets with his friends Daniel and Lois Vargas at the Shawmut Diner, where they attempt to convince him to stop card counting.  Charlie go to a Portuguese restaurant with Daniel and Lois, and becomes interested in Celia after seeing her sing fado.  He repeatedly tries to date Celie, and is rebuffed.  Charlie later finds Celia's address in the phone book and goes to her house, where he encounters Vicky.  Vicky agrees to help Charlie pursue her mother in exchange for card counting lessons, and threatens to reveal his identity as a gambler should he refuse.
A:
What is the first name of the person who's identity the widow's daughter threatens to reveal?