Anne Marie Kaye tells the court she told Kevin Wright in November or December 2008: "I don't want to fundraise anymore because I don't think it's fair that we're fundraising for New York when we're not going anymore."
She continued: "He said we should keep going until the end of the year." It had been thought that her son Callum would benefit from treatment in New York, but she was later advised that it might not be appropriate.
A mother from Nottingham has been giving evidence in the trial of Kevin Wright, who is accused of stealing and defrauding charities.
A Tamworth father accused of stealing thousands of pounds from a fund he set up to raise cash for son's cancer treatment has gone on trial.