None of her other toys has a mouth that she can open and close as well as his. This makes "feeding lunch" more believable to her...
Sorry for whatever reason I couldn't get the sound to work.
Elmo can also stand on his two feet. This means Elmo can hold her hand and walk. It is hilarious watching her drag poor Elmo by the arm.
She calls Elmo Buddy. I think I call almost all little boys that. Around the :39 you can hear her call him Buddy.
My favorite part? She has lots of 'babies' she cares for. Minnie, Mickey, Elmo, Bear, etc. And if she isn't 'mothering' the whole bunch, she at least has 2.