My niece is converting to Judaism Jews any help?

My niece She is 21 and She is converting to reform Judaism her mother Is agnostic and his father try to convert to all religions and the last one was Judaism but now he turn agnostic, My niece has been attending the synagogue for one year, She had interview with Rabbi tomorrow, She doesn't have a yahoo account, so she asks me to ask for and advice, She has study a lot, and She knows what to said but She knows there a question about her birth religion but since She never had the one? When she was little her family use to take her to all kinds of churches but She always like it Judaism and now that She did all steps She is been interview tomorrow, so her answer of why She wants to convert is because She has study all religion and She feels that Jewish religion believes in what she belief and She feels part of that community.(yes at the age of 14 She left been pressure my her family and start study all religions) She talked to all her family and they don't complain about it since they are from all religions background, but She is really nervous so any help would be appreciate and thanks