My ex mother in law is a caregiver and conviced her pt to sign over all assets and accounts to her. Is that legal?

She is not the CNA, who is also getting half of his assets and money. He has a daughter who does NOT know what is going on, Also my ex mother in law is on 5 years probation for stealing narcotics at Walgreen where she was caught on the job. Also she just recieved $50,000 from him and has spent it all on 3 cars, new furniture, remodeling her home, going to Disney World...ect.