Equity sharing family

[Eric Horvat]

My wife wants to sell our home next year after retirement so we can move closer to grandchild.  Our daughter has 2 homes with mortgages and is currently using one as rental.

Can we share equity by using our money from sale of our house to pay down principal of her loan (approx $250,000) and become % partners?   We want to live in that home for about 2-3 years to help with 2 year old grandaughter while trying to find a way to help her financially.  Then sell and use our % equity as down payment on larger home.