This sort of backfired on her during her incessant lectures to her children about how stupid, lazy and mean-spirited they are for wanting to live in filth; since she's not that good at picking up after herself, it amazed and angered them that they should be better at it than she is. Well, that and the fact that she confused being told to do her job with being underappreciated. When you read Lynnsights that clearly imply that the children who think that things are done by magic when it's made clear that they know that they should be done by her, it's sort of obvious that they resent being lectured to by someone too stupid to see what's going on around her.
This sort of thing is why I think that when Elly told April that she was confused about why the Housening bothered her, April was mollified; she remembered the past and realized that, despite Elly's claims otherwise, she really didn't know what was going on around her. Mike and Liz might, after having spent decades listening to Elly rant in their faces about how they take her for granted, sort of accept that they might have done so but the youngest is going to think "Hey. She doesn't actually know what happened to us but she is making an effort to understand so, what the heck, huh?"