One of the most common types of elder abuse is financial, but this just underscores how people who can take advantage of others usually pick the most vulnerable. Similarly, terminal disease will involve patients who are confused, fatalistic, or who feel helpless. If aware of what's going on, the last thing such a patient wants is confrontation with 'loved ones' to add unnecessary drama to his or her final days. Regardless of whether the patient cares or not, financial abuse of anyone is ethically wrong and illegal, and you have a responsibility to act on it like on any abuse.