I would like to make my wife co-owner for my flat since she has been paying EMI for the last 14 years. Now I want to give her Tenancy by Entirety (TBE) type of ownership. Can these EMI payments be used to create a Sale deed giving her Tenancy by Entirety. To be clear I don't want her to make another payment for this sale deed since she already put in the money to the house. Will a sale deed be valid without a payment of price?