I see what I did. I didn't read the message properly. I was probably upset my first set of parents passed away.

My third gen parents of the same family left behind an 18 year old son & 16 year old daughter. I followed the arrow to click new generation instead of knowing the option of 'done' would take me back to the house with the remaining kids. I took this option this time to try it out. They are doing ok and I'll judge how the daughter reacts to her brother going to college.

Edited - too many families in test & I got the wrong family. My 2nd real family left the two orphans. I have managed to get the youngest happy (not sure that's a good thing so soon ... ), but the son is still a bit blue.