You go to the thing that says 'Family', and go into it. Then, go to 'Parent' and you will see your last Tama. Press the B button 4 times, and a code should show up that you enter in TamaTown so you can see your Tama's parent. .
I had the parent thing my tama is now on G2 when it became a teen the parent thing went away lucky I had the password written down Good thing is today the match maker came and I got a baby boy. Here is the password to go to parents on tamatown 08627 65484