Misrepresentation is treated extremely seriously by IRCC and we are constantly surprised at what they manage to discover about applicants through their own resources. As the Primary Applicant, your daughter would be caught in the crossfire, even if she knew nothing about it.
This is a complex case and really needs professional advice. As he is "wealthy" he would be advised to consult with a Canadian immigration lawyer for input.
I am going to speak to him this evening. I am in a no win situation really because what ever I say is misinterpreted as me not wanting her to go. Bit beyond that as she is there anyway. I just dont want it to all go wrong as there would be a real impact to her mental health.