Hello,
For a power of attorney to sell a property it is mandatory to get the POA registered and that can only be done when your wife comes to India in the registrar office, also this has been setteled by the Hon'ble Apex Court.
Since your case is an exception to the General rule you can take permission from the registrar if he allows to execute the sale deed through Poa Executed in foreign land.
Yes you can transfer the money