About the hearing aid thing, apparently Sophia seems to need one when Dorothy's date John Nerritti (EPI. 150 - WHAT A DIFFERENCE A DATE MAKES) says "You haven't aged a bit!" twice. Sophia claims to have heard him, only to repeat to herself "Only staged a hit??" Yet 5 episodes later (EPI. 155 - HEY, LOOK ME OVER), her hearing is fine and Dorothy's is not.