I want to partner with my 70-year old mother in law to buy a property. She is going to put $200K down and I am going to get $400K loan (since she won't qualify for loan, and I have a 780 credit score and I can get a good interest rate). She will be living in the house and also will be the person responsible for monthly payments for the mortgage, tax, and insurance.
My question is how much of this property is hers and how much is mine? What's the norm for such a partnership?