The problem with that I have with that is that Elly (as always) isn't being honest about her real motives. Recently, howtheduck had this to say about her incessant fretting about how close he is to girls he doesn't see himself as spending nearly enough time with:
All those episodes with Martha and Rhetta where Elly tries to get control of the situation seem like the desperate attempts by a woman who knows that she has been doing almost nothing and decides to do something in a big way to make up for it.
Simply put, Elly knows deep down that her stupid belief that paying attention to what a child does, what he thinks, what he likes and what he wants somehow magically means that the child in question has enslaved her in his family politics has resulted in the oafish bonehead she can't get along with. She thinks that half-assed over-parenting in the here and now can make up for the half-assed non-parenting she did beforehand. If she listened to headache music, she would find that Steven Page and Ed Robertson wrote and performed a little ditty that seems to fit her situation: "Too Little, Too Late."