Does something feel off about this deal? Or does this seem legal and like it can't back fire down the road?

my mother in law gifted my husband and i our inheritance for down payment. She sold a rental property and did a 1031 exchange to help us buy a house. My husband and i were told the home would be in our name. We now are renting the house that was suppose to be in our name from my mother in law. She says she will gift us the equity over span of 3 years to avoid paying taxes. We are paying the mortgage and the upkeep of the whole house. Every time we ask for a contract or something stating this in writing it gets brushed off. We have now invested over $35,000 dollars into this home. Paying for renovations and faulty piping and pulling etc.

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