I may be in the minority here but I just don't think Abbie is capable of learning much more at this point. Her body and brain are almost adult now. She's not even fully potty trained. She can match colors when she's in the mood, sort objects sometimes, and ask for Nature Valley bars on her device. She can shake her head, barely nod, say "nooooo," and tread water. She can drink from a cup, and she can eat with a spoon with the dexterity of my toddler. That's about it, guys. I think they should give her toys and try to keep her busy and happy. She doesn't have the intellectual capacity for much more, in my opinion.
Given the fact that A&P do not put in the effort and consistency, I can certainly see how it appears that way. They're doing the bare minimum with her and reaping the results of it. While I don't think that Abbie is extremely more capable... I do think that we would see better results if A&P really tried. If she isn't given the means to do more and her support system is not really giving much support, can you really expect anything other than what we're seeing??